Finding the Fourth Proportional to 72,736.88, 100,378.20 and 42,524.72

Step by Step Solution

1. Step 1: Write the proportion equation
   72,736.88 : 100,378.20 = 42,524.72 : x
2. Step 2: Convert to fraction form
   72,736.88/100,378.20 = 42,524.72/x
3. Step 3: Cross multiply
   72,736.88x = 100,378.20 × 42,524.72
4. Step 4: Simplify right side
   72,736.88x = 4,268,554,849.10
5. Step 5: Solve for x
   x = 4,268,554,849.10/72,736.88
6. Step 6: Final answer
   x = 58,684.88