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Finding the Fourth Proportional to 142,689.60, 196,914.24 and 86,088.96

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Solution

The fourth proportional to 142,689.60, 196,914.24 and 86,088.96 is: 118,804.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,689.60 : 196,914.24 = 86,088.96 : x
  2. Step 2: Convert to fraction form
    142,689.60/196,914.24 = 86,088.96/x
  3. Step 3: Cross multiply
    142,689.60x = 196,914.24 × 86,088.96
  4. Step 4: Simplify right side
    142,689.60x = 16,952,142,130.79
  5. Step 5: Solve for x
    x = 16,952,142,130.79/142,689.60
  6. Step 6: Final answer
    x = 118,804.33

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