Finding the Fourth Proportional to 72,356.37, 99,854.87 and 42,136.82

Step by Step Solution

1. Step 1: Write the proportion equation
   72,356.37 : 99,854.87 = 42,136.82 : x
2. Step 2: Convert to fraction form
   72,356.37/99,854.87 = 42,136.82/x
3. Step 3: Cross multiply
   72,356.37x = 99,854.87 × 42,136.82
4. Step 4: Simplify right side
   72,356.37x = 4,207,566,472.63
5. Step 5: Solve for x
   x = 4,207,566,472.63/72,356.37
6. Step 6: Final answer
   x = 58,150.60