Finding the Fourth Proportional to 71,632.56, 107,470.34 and 28,916.01

Step by Step Solution

1. Step 1: Write the proportion equation
   71,632.56 : 107,470.34 = 28,916.01 : x
2. Step 2: Convert to fraction form
   71,632.56/107,470.34 = 28,916.01/x
3. Step 3: Cross multiply
   71,632.56x = 107,470.34 × 28,916.01
4. Step 4: Simplify right side
   71,632.56x = 3,107,613,281.56
5. Step 5: Solve for x
   x = 3,107,613,281.56/71,632.56
6. Step 6: Final answer
   x = 43,382.69