Finding the Fourth Proportional to 51,543.70, 77,666.72 and 42,388.82

Step by Step Solution

1. Step 1: Write the proportion equation
   51,543.70 : 77,666.72 = 42,388.82 : x
2. Step 2: Convert to fraction form
   51,543.70/77,666.72 = 42,388.82/x
3. Step 3: Cross multiply
   51,543.70x = 77,666.72 × 42,388.82
4. Step 4: Simplify right side
   51,543.70x = 3,292,200,614.07
5. Step 5: Solve for x
   x = 3,292,200,614.07/51,543.70
6. Step 6: Final answer
   x = 63,872.03