Finding the Fourth Proportional to 254,503.01, 381,691.46 and 86,019.62

Step by Step Solution

1. Step 1: Write the proportion equation
   254,503.01 : 381,691.46 = 86,019.62 : x
2. Step 2: Convert to fraction form
   254,503.01/381,691.46 = 86,019.62/x
3. Step 3: Cross multiply
   254,503.01x = 381,691.46 × 86,019.62
4. Step 4: Simplify right side
   254,503.01x = 32,832,952,007.89
5. Step 5: Solve for x
   x = 32,832,952,007.89/254,503.01
6. Step 6: Final answer
   x = 129,008.11