Finding the Fourth Proportional to 62,436.71, 86,186.49 and 42,397.31

Step by Step Solution

1. Step 1: Write the proportion equation
   62,436.71 : 86,186.49 = 42,397.31 : x
2. Step 2: Convert to fraction form
   62,436.71/86,186.49 = 42,397.31/x
3. Step 3: Cross multiply
   62,436.71x = 86,186.49 × 42,397.31
4. Step 4: Simplify right side
   62,436.71x = 3,654,075,334.34
5. Step 5: Solve for x
   x = 3,654,075,334.34/62,436.71
6. Step 6: Final answer
   x = 58,524.47