Finding the Fourth Proportional to 72,495.42, 108,774.45 and 39,238.92

Step by Step Solution

1. Step 1: Write the proportion equation
   72,495.42 : 108,774.45 = 39,238.92 : x
2. Step 2: Convert to fraction form
   72,495.42/108,774.45 = 39,238.92/x
3. Step 3: Cross multiply
   72,495.42x = 108,774.45 × 39,238.92
4. Step 4: Simplify right side
   72,495.42x = 4,268,191,941.59
5. Step 5: Solve for x
   x = 4,268,191,941.59/72,495.42
6. Step 6: Final answer
   x = 58,875.33