Finding the Fourth Proportional to 86,302.71, 129,485.12 and 30,151.08

Step by Step Solution

1. Step 1: Write the proportion equation
   86,302.71 : 129,485.12 = 30,151.08 : x
2. Step 2: Convert to fraction form
   86,302.71/129,485.12 = 30,151.08/x
3. Step 3: Cross multiply
   86,302.71x = 129,485.12 × 30,151.08
4. Step 4: Simplify right side
   86,302.71x = 3,904,116,061.17
5. Step 5: Solve for x
   x = 3,904,116,061.17/86,302.71
6. Step 6: Final answer
   x = 45,237.47