Finding the Fourth Proportional to 52,442.40, 78,584.94 and 42,600.72

Step by Step Solution

1. Step 1: Write the proportion equation
   52,442.40 : 78,584.94 = 42,600.72 : x
2. Step 2: Convert to fraction form
   52,442.40/78,584.94 = 42,600.72/x
3. Step 3: Cross multiply
   52,442.40x = 78,584.94 × 42,600.72
4. Step 4: Simplify right side
   52,442.40x = 3,347,775,025.16
5. Step 5: Solve for x
   x = 3,347,775,025.16/52,442.40
6. Step 6: Final answer
   x = 63,837.18