Finding the Fourth Proportional to 156,638.02, 216,158.13 and 88,667.89

Step by Step Solution

1. Step 1: Write the proportion equation
   156,638.02 : 216,158.13 = 88,667.89 : x
2. Step 2: Convert to fraction form
   156,638.02/216,158.13 = 88,667.89/x
3. Step 3: Cross multiply
   156,638.02x = 216,158.13 × 88,667.89
4. Step 4: Simplify right side
   156,638.02x = 19,166,285,293.45
5. Step 5: Solve for x
   x = 19,166,285,293.45/156,638.02
6. Step 6: Final answer
   x = 122,360.36