Finding the Fourth Proportional to 107,149.65, 147,870.12 and 59,400.15

Step by Step Solution

1. Step 1: Write the proportion equation
   107,149.65 : 147,870.12 = 59,400.15 : x
2. Step 2: Convert to fraction form
   107,149.65/147,870.12 = 59,400.15/x
3. Step 3: Cross multiply
   107,149.65x = 147,870.12 × 59,400.15
4. Step 4: Simplify right side
   107,149.65x = 8,783,507,308.52
5. Step 5: Solve for x
   x = 8,783,507,308.52/107,149.65
6. Step 6: Final answer
   x = 81,974.20