Finding the Fourth Proportional to 85,719.59, 128,543.31 and 32,402.60

Step by Step Solution

1. Step 1: Write the proportion equation
   85,719.59 : 128,543.31 = 32,402.60 : x
2. Step 2: Convert to fraction form
   85,719.59/128,543.31 = 32,402.60/x
3. Step 3: Cross multiply
   85,719.59x = 128,543.31 × 32,402.60
4. Step 4: Simplify right side
   85,719.59x = 4,165,136,813.89
5. Step 5: Solve for x
   x = 4,165,136,813.89/85,719.59
6. Step 6: Final answer
   x = 48,590.26