Finding the Fourth Proportional to 156,341.96, 215,766.50 and 89,261

Step by Step Solution

1. Step 1: Write the proportion equation
   156,341.96 : 215,766.50 = 89,261 : x
2. Step 2: Convert to fraction form
   156,341.96/215,766.50 = 89,261/x
3. Step 3: Cross multiply
   156,341.96x = 215,766.50 × 89,261
4. Step 4: Simplify right side
   156,341.96x = 19,259,533,556.50
5. Step 5: Solve for x
   x = 19,259,533,556.50/156,341.96
6. Step 6: Final answer
   x = 123,188.51