Finding the Fourth Proportional to 72,882.78, 100,543.86 and 42,649.55

Step by Step Solution

1. Step 1: Write the proportion equation
   72,882.78 : 100,543.86 = 42,649.55 : x
2. Step 2: Convert to fraction form
   72,882.78/100,543.86 = 42,649.55/x
3. Step 3: Cross multiply
   72,882.78x = 100,543.86 × 42,649.55
4. Step 4: Simplify right side
   72,882.78x = 4,288,150,384.26
5. Step 5: Solve for x
   x = 4,288,150,384.26/72,882.78
6. Step 6: Final answer
   x = 58,836.27