Finding the Fourth Proportional to 150,870.16, 208,200.04 and 81,959.12

Step by Step Solution

1. Step 1: Write the proportion equation
   150,870.16 : 208,200.04 = 81,959.12 : x
2. Step 2: Convert to fraction form
   150,870.16/208,200.04 = 81,959.12/x
3. Step 3: Cross multiply
   150,870.16x = 208,200.04 × 81,959.12
4. Step 4: Simplify right side
   150,870.16x = 17,063,892,062.36
5. Step 5: Solve for x
   x = 17,063,892,062.36/150,870.16
6. Step 6: Final answer
   x = 113,103.16