Finding the Fourth Proportional to 74,700.42, 103,086.59 and 40,708.91

Step by Step Solution

1. Step 1: Write the proportion equation
   74,700.42 : 103,086.59 = 40,708.91 : x
2. Step 2: Convert to fraction form
   74,700.42/103,086.59 = 40,708.91/x
3. Step 3: Cross multiply
   74,700.42x = 103,086.59 × 40,708.91
4. Step 4: Simplify right side
   74,700.42x = 4,196,543,074.01
5. Step 5: Solve for x
   x = 4,196,543,074.01/74,700.42
6. Step 6: Final answer
   x = 56,178.31