Finding the Fourth Proportional to 156,667.82, 216,229.20 and 88,688.66

Step by Step Solution

1. Step 1: Write the proportion equation
   156,667.82 : 216,229.20 = 88,688.66 : x
2. Step 2: Convert to fraction form
   156,667.82/216,229.20 = 88,688.66/x
3. Step 3: Cross multiply
   156,667.82x = 216,229.20 × 88,688.66
4. Step 4: Simplify right side
   156,667.82x = 19,177,078,063.17
5. Step 5: Solve for x
   x = 19,177,078,063.17/156,667.82
6. Step 6: Final answer
   x = 122,405.98