Finding the Fourth Proportional to 162,219.06, 243,245.52 and 86,360.69

Step by Step Solution

1. Step 1: Write the proportion equation
   162,219.06 : 243,245.52 = 86,360.69 : x
2. Step 2: Convert to fraction form
   162,219.06/243,245.52 = 86,360.69/x
3. Step 3: Cross multiply
   162,219.06x = 243,245.52 × 86,360.69
4. Step 4: Simplify right side
   162,219.06x = 21,006,851,554.72
5. Step 5: Solve for x
   x = 21,006,851,554.72/162,219.06
6. Step 6: Final answer
   x = 129,496.81