Finding the Fourth Proportional to 156,003.40, 215,266.17 and 88,016.41

Step by Step Solution

1. Step 1: Write the proportion equation
   156,003.40 : 215,266.17 = 88,016.41 : x
2. Step 2: Convert to fraction form
   156,003.40/215,266.17 = 88,016.41/x
3. Step 3: Cross multiply
   156,003.40x = 215,266.17 × 88,016.41
4. Step 4: Simplify right side
   156,003.40x = 18,946,955,477.85
5. Step 5: Solve for x
   x = 18,946,955,477.85/156,003.40
6. Step 6: Final answer
   x = 121,452.20