Finding the Fourth Proportional to 106,929.40, 147,560.78 and 59,181.72

Step by Step Solution

1. Step 1: Write the proportion equation
   106,929.40 : 147,560.78 = 59,181.72 : x
2. Step 2: Convert to fraction form
   106,929.40/147,560.78 = 59,181.72/x
3. Step 3: Cross multiply
   106,929.40x = 147,560.78 × 59,181.72
4. Step 4: Simplify right side
   106,929.40x = 8,732,900,912.90
5. Step 5: Solve for x
   x = 8,732,900,912.90/106,929.40
6. Step 6: Final answer
   x = 81,669.79