Finding the Fourth Proportional to 72,407.52, 99,928.49 and 42,195.33

Step by Step Solution

1. Step 1: Write the proportion equation
   72,407.52 : 99,928.49 = 42,195.33 : x
2. Step 2: Convert to fraction form
   72,407.52/99,928.49 = 42,195.33/x
3. Step 3: Cross multiply
   72,407.52x = 99,928.49 × 42,195.33
4. Step 4: Simplify right side
   72,407.52x = 4,216,515,400.98
5. Step 5: Solve for x
   x = 4,216,515,400.98/72,407.52
6. Step 6: Final answer
   x = 58,233.11