Finding the Fourth Proportional to 52,133.10, 78,307.92 and 42,149.10

Step by Step Solution

1. Step 1: Write the proportion equation
   52,133.10 : 78,307.92 = 42,149.10 : x
2. Step 2: Convert to fraction form
   52,133.10/78,307.92 = 42,149.10/x
3. Step 3: Cross multiply
   52,133.10x = 78,307.92 × 42,149.10
4. Step 4: Simplify right side
   52,133.10x = 3,300,608,350.87
5. Step 5: Solve for x
   x = 3,300,608,350.87/52,133.10
6. Step 6: Final answer
   x = 63,311.19