Finding the Fourth Proportional to 156,910.34, 216,535.39 and 88,940.16

Step by Step Solution

1. Step 1: Write the proportion equation
   156,910.34 : 216,535.39 = 88,940.16 : x
2. Step 2: Convert to fraction form
   156,910.34/216,535.39 = 88,940.16/x
3. Step 3: Cross multiply
   156,910.34x = 216,535.39 × 88,940.16
4. Step 4: Simplify right side
   156,910.34x = 19,258,692,009.91
5. Step 5: Solve for x
   x = 19,258,692,009.91/156,910.34
6. Step 6: Final answer
   x = 122,736.92