Finding the Fourth Proportional to 109,861, 164,693.76 and 39,724.72

Step by Step Solution

1. Step 1: Write the proportion equation
   109,861 : 164,693.76 = 39,724.72 : x
2. Step 2: Convert to fraction form
   109,861/164,693.76 = 39,724.72/x
3. Step 3: Cross multiply
   109,861x = 164,693.76 × 39,724.72
4. Step 4: Simplify right side
   109,861x = 6,542,413,501.75
5. Step 5: Solve for x
   x = 6,542,413,501.75/109,861
6. Step 6: Final answer
   x = 59,551.74