Finding the Fourth Proportional to 52,683.32, 72,729.42 and 40,719.62

Step by Step Solution

1. Step 1: Write the proportion equation
   52,683.32 : 72,729.42 = 40,719.62 : x
2. Step 2: Convert to fraction form
   52,683.32/72,729.42 = 40,719.62/x
3. Step 3: Cross multiply
   52,683.32x = 72,729.42 × 40,719.62
4. Step 4: Simplify right side
   52,683.32x = 2,961,514,345.22
5. Step 5: Solve for x
   x = 2,961,514,345.22/52,683.32
6. Step 6: Final answer
   x = 56,213.51