Finding the Fourth Proportional to 99,061.40, 148,596.96 and 39,889.08

Step by Step Solution

1. Step 1: Write the proportion equation
   99,061.40 : 148,596.96 = 39,889.08 : x
2. Step 2: Convert to fraction form
   99,061.40/148,596.96 = 39,889.08/x
3. Step 3: Cross multiply
   99,061.40x = 148,596.96 × 39,889.08
4. Step 4: Simplify right side
   99,061.40x = 5,927,396,025.20
5. Step 5: Solve for x
   x = 5,927,396,025.20/99,061.40
6. Step 6: Final answer
   x = 59,835.58