Finding the Fourth Proportional to 62,901.72, 86,843.16 and 43,290

Step by Step Solution

1. Step 1: Write the proportion equation
   62,901.72 : 86,843.16 = 43,290 : x
2. Step 2: Convert to fraction form
   62,901.72/86,843.16 = 43,290/x
3. Step 3: Cross multiply
   62,901.72x = 86,843.16 × 43,290
4. Step 4: Simplify right side
   62,901.72x = 3,759,440,396.40
5. Step 5: Solve for x
   x = 3,759,440,396.40/62,901.72
6. Step 6: Final answer
   x = 59,766.89