Finding the Fourth Proportional to 123,147.50, 169,943.78 and 69,432.39

Step by Step Solution

1. Step 1: Write the proportion equation
   123,147.50 : 169,943.78 = 69,432.39 : x
2. Step 2: Convert to fraction form
   123,147.50/169,943.78 = 69,432.39/x
3. Step 3: Cross multiply
   123,147.50x = 169,943.78 × 69,432.39
4. Step 4: Simplify right side
   123,147.50x = 11,799,602,984.62
5. Step 5: Solve for x
   x = 11,799,602,984.62/123,147.50
6. Step 6: Final answer
   x = 95,816.83