Finding the Fourth Proportional to 162,701.74, 243,959.17 and 86,706.72

Step by Step Solution

1. Step 1: Write the proportion equation
   162,701.74 : 243,959.17 = 86,706.72 : x
2. Step 2: Convert to fraction form
   162,701.74/243,959.17 = 86,706.72/x
3. Step 3: Cross multiply
   162,701.74x = 243,959.17 × 86,706.72
4. Step 4: Simplify right side
   162,701.74x = 21,152,898,008.06
5. Step 5: Solve for x
   x = 21,152,898,008.06/162,701.74
6. Step 6: Final answer
   x = 130,010.28