Finding the Fourth Proportional to 106,724.98, 147,282.33 and 58,978.72

Step by Step Solution

1. Step 1: Write the proportion equation
   106,724.98 : 147,282.33 = 58,978.72 : x
2. Step 2: Convert to fraction form
   106,724.98/147,282.33 = 58,978.72/x
3. Step 3: Cross multiply
   106,724.98x = 147,282.33 × 58,978.72
4. Step 4: Simplify right side
   106,724.98x = 8,686,523,302.02
5. Step 5: Solve for x
   x = 8,686,523,302.02/106,724.98
6. Step 6: Final answer
   x = 81,391.66