Finding the Fourth Proportional to 71,065.60, 98,066.56 and 40,830.72

Step by Step Solution

1. Step 1: Write the proportion equation
   71,065.60 : 98,066.56 = 40,830.72 : x
2. Step 2: Convert to fraction form
   71,065.60/98,066.56 = 40,830.72/x
3. Step 3: Cross multiply
   71,065.60x = 98,066.56 × 40,830.72
4. Step 4: Simplify right side
   71,065.60x = 4,004,128,252.72
5. Step 5: Solve for x
   x = 4,004,128,252.72/71,065.60
6. Step 6: Final answer
   x = 56,344.11