Finding the Fourth Proportional to 150,061.90, 207,103.29 and 86,412.10

Step by Step Solution

1. Step 1: Write the proportion equation
   150,061.90 : 207,103.29 = 86,412.10 : x
2. Step 2: Convert to fraction form
   150,061.90/207,103.29 = 86,412.10/x
3. Step 3: Cross multiply
   150,061.90x = 207,103.29 × 86,412.10
4. Step 4: Simplify right side
   150,061.90x = 17,896,230,205.81
5. Step 5: Solve for x
   x = 17,896,230,205.81/150,061.90
6. Step 6: Final answer
   x = 119,258.99