Finding the Fourth Proportional to 156,300.88, 215,682.45 and 91,763.32

Step by Step Solution

1. Step 1: Write the proportion equation
   156,300.88 : 215,682.45 = 91,763.32 : x
2. Step 2: Convert to fraction form
   156,300.88/215,682.45 = 91,763.32/x
3. Step 3: Cross multiply
   156,300.88x = 215,682.45 × 91,763.32
4. Step 4: Simplify right side
   156,300.88x = 19,791,737,677.73
5. Step 5: Solve for x
   x = 19,791,737,677.73/156,300.88
6. Step 6: Final answer
   x = 126,625.89