Finding the Fourth Proportional to 156,886.56, 216,516.24 and 89,822.88

Step by Step Solution

1. Step 1: Write the proportion equation
   156,886.56 : 216,516.24 = 89,822.88 : x
2. Step 2: Convert to fraction form
   156,886.56/216,516.24 = 89,822.88/x
3. Step 3: Cross multiply
   156,886.56x = 216,516.24 × 89,822.88
4. Step 4: Simplify right side
   156,886.56x = 19,448,112,243.57
5. Step 5: Solve for x
   x = 19,448,112,243.57/156,886.56
6. Step 6: Final answer
   x = 123,962.90