Finding the Fourth Proportional to 156,638.52, 216,158.83 and 88,668.38

Step by Step Solution

1. Step 1: Write the proportion equation
   156,638.52 : 216,158.83 = 88,668.38 : x
2. Step 2: Convert to fraction form
   156,638.52/216,158.83 = 88,668.38/x
3. Step 3: Cross multiply
   156,638.52x = 216,158.83 × 88,668.38
4. Step 4: Simplify right side
   156,638.52x = 19,166,453,597.52
5. Step 5: Solve for x
   x = 19,166,453,597.52/156,638.52
6. Step 6: Final answer
   x = 122,361.05