Finding the Fourth Proportional to 72,868.74, 100,553.16 and 42,649.86

Step by Step Solution

1. Step 1: Write the proportion equation
   72,868.74 : 100,553.16 = 42,649.86 : x
2. Step 2: Convert to fraction form
   72,868.74/100,553.16 = 42,649.86/x
3. Step 3: Cross multiply
   72,868.74x = 100,553.16 × 42,649.86
4. Step 4: Simplify right side
   72,868.74x = 4,288,578,196.56
5. Step 5: Solve for x
   x = 4,288,578,196.56/72,868.74
6. Step 6: Final answer
   x = 58,853.47