Finding the Fourth Proportional to 150,566.15, 207,771.40 and 86,038.72

Step by Step Solution

1. Step 1: Write the proportion equation
   150,566.15 : 207,771.40 = 86,038.72 : x
2. Step 2: Convert to fraction form
   150,566.15/207,771.40 = 86,038.72/x
3. Step 3: Cross multiply
   150,566.15x = 207,771.40 × 86,038.72
4. Step 4: Simplify right side
   150,566.15x = 17,876,385,308.61
5. Step 5: Solve for x
   x = 17,876,385,308.61/150,566.15
6. Step 6: Final answer
   x = 118,727.78