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Finding the Fourth Proportional to 84,700.51, 117,024 and 72,086.99

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Solution

The fourth proportional to 84,700.51, 117,024 and 72,086.99 is: 99,596.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,700.51 : 117,024 = 72,086.99 : x
  2. Step 2: Convert to fraction form
    84,700.51/117,024 = 72,086.99/x
  3. Step 3: Cross multiply
    84,700.51x = 117,024 × 72,086.99
  4. Step 4: Simplify right side
    84,700.51x = 8,435,907,917.76
  5. Step 5: Solve for x
    x = 8,435,907,917.76/84,700.51
  6. Step 6: Final answer
    x = 99,596.90

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