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Finding the Fourth Proportional to 78,395.68, 117,744.86 and 67,176.37

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Solution

The fourth proportional to 78,395.68, 117,744.86 and 67,176.37 is: 100,894.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,395.68 : 117,744.86 = 67,176.37 : x
  2. Step 2: Convert to fraction form
    78,395.68/117,744.86 = 67,176.37/x
  3. Step 3: Cross multiply
    78,395.68x = 117,744.86 × 67,176.37
  4. Step 4: Simplify right side
    78,395.68x = 7,909,672,280.96
  5. Step 5: Solve for x
    x = 7,909,672,280.96/78,395.68
  6. Step 6: Final answer
    x = 100,894.24

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