Finding the Fourth Proportional to 71,693.59, 98,961.76 and 43,399.28

Step by Step Solution

1. Step 1: Write the proportion equation
   71,693.59 : 98,961.76 = 43,399.28 : x
2. Step 2: Convert to fraction form
   71,693.59/98,961.76 = 43,399.28/x
3. Step 3: Cross multiply
   71,693.59x = 98,961.76 × 43,399.28
4. Step 4: Simplify right side
   71,693.59x = 4,294,869,131.53
5. Step 5: Solve for x
   x = 4,294,869,131.53/71,693.59
6. Step 6: Final answer
   x = 59,905.90