Finding the Fourth Proportional to 156,323.10, 215,724.96 and 88,362.08

Step by Step Solution

1. Step 1: Write the proportion equation
   156,323.10 : 215,724.96 = 88,362.08 : x
2. Step 2: Convert to fraction form
   156,323.10/215,724.96 = 88,362.08/x
3. Step 3: Cross multiply
   156,323.10x = 215,724.96 × 88,362.08
4. Step 4: Simplify right side
   156,323.10x = 19,061,905,094.89
5. Step 5: Solve for x
   x = 19,061,905,094.89/156,323.10
6. Step 6: Final answer
   x = 121,939.14