Finding the Fourth Proportional to 149,830.74, 206,772.71 and 86,168.59

Step by Step Solution

1. Step 1: Write the proportion equation
   149,830.74 : 206,772.71 = 86,168.59 : x
2. Step 2: Convert to fraction form
   149,830.74/206,772.71 = 86,168.59/x
3. Step 3: Cross multiply
   149,830.74x = 206,772.71 × 86,168.59
4. Step 4: Simplify right side
   149,830.74x = 17,817,311,406.47
5. Step 5: Solve for x
   x = 17,817,311,406.47/149,830.74
6. Step 6: Final answer
   x = 118,916.26