Finding the Fourth Proportional to 74,271.40, 111,505.98 and 43,129

Step by Step Solution

1. Step 1: Write the proportion equation
   74,271.40 : 111,505.98 = 43,129 : x
2. Step 2: Convert to fraction form
   74,271.40/111,505.98 = 43,129/x
3. Step 3: Cross multiply
   74,271.40x = 111,505.98 × 43,129
4. Step 4: Simplify right side
   74,271.40x = 4,809,141,411.42
5. Step 5: Solve for x
   x = 4,809,141,411.42/74,271.40
6. Step 6: Final answer
   x = 64,750.92