Finding the Fourth Proportional to 149,818.72, 206,760.72 and 86,176.48

Step by Step Solution

1. Step 1: Write the proportion equation
   149,818.72 : 206,760.72 = 86,176.48 : x
2. Step 2: Convert to fraction form
   149,818.72/206,760.72 = 86,176.48/x
3. Step 3: Cross multiply
   149,818.72x = 206,760.72 × 86,176.48
4. Step 4: Simplify right side
   149,818.72x = 17,817,911,051.87
5. Step 5: Solve for x
   x = 17,817,911,051.87/149,818.72
6. Step 6: Final answer
   x = 118,929.80