Finding the Fourth Proportional to 52,168.74, 78,078.15 and 42,808.38

Step by Step Solution

1. Step 1: Write the proportion equation
   52,168.74 : 78,078.15 = 42,808.38 : x
2. Step 2: Convert to fraction form
   52,168.74/78,078.15 = 42,808.38/x
3. Step 3: Cross multiply
   52,168.74x = 78,078.15 × 42,808.38
4. Step 4: Simplify right side
   52,168.74x = 3,342,399,114.90
5. Step 5: Solve for x
   x = 3,342,399,114.90/52,168.74
6. Step 6: Final answer
   x = 64,069.00