Finding the Fourth Proportional to 156,105.54, 215,459.37 and 98,708.22

Step by Step Solution

1. Step 1: Write the proportion equation
   156,105.54 : 215,459.37 = 98,708.22 : x
2. Step 2: Convert to fraction form
   156,105.54/215,459.37 = 98,708.22/x
3. Step 3: Cross multiply
   156,105.54x = 215,459.37 × 98,708.22
4. Step 4: Simplify right side
   156,105.54x = 21,267,610,895.02
5. Step 5: Solve for x
   x = 21,267,610,895.02/156,105.54
6. Step 6: Final answer
   x = 136,238.67