Finding the Fourth Proportional to 72,437.76, 108,630.72 and 39,182.40

Step by Step Solution

1. Step 1: Write the proportion equation
   72,437.76 : 108,630.72 = 39,182.40 : x
2. Step 2: Convert to fraction form
   72,437.76/108,630.72 = 39,182.40/x
3. Step 3: Cross multiply
   72,437.76x = 108,630.72 × 39,182.40
4. Step 4: Simplify right side
   72,437.76x = 4,256,412,323.33
5. Step 5: Solve for x
   x = 4,256,412,323.33/72,437.76
6. Step 6: Final answer
   x = 58,759.58