Finding the Fourth Proportional to 156,282.72, 215,661.60 and 88,307.52

Step by Step Solution

1. Step 1: Write the proportion equation
   156,282.72 : 215,661.60 = 88,307.52 : x
2. Step 2: Convert to fraction form
   156,282.72/215,661.60 = 88,307.52/x
3. Step 3: Cross multiply
   156,282.72x = 215,661.60 × 88,307.52
4. Step 4: Simplify right side
   156,282.72x = 19,044,541,055.23
5. Step 5: Solve for x
   x = 19,044,541,055.23/156,282.72
6. Step 6: Final answer
   x = 121,859.54