Finding the Fourth Proportional to 156,920.18, 216,559.91 and 88,016.11

Step by Step Solution

1. Step 1: Write the proportion equation
   156,920.18 : 216,559.91 = 88,016.11 : x
2. Step 2: Convert to fraction form
   156,920.18/216,559.91 = 88,016.11/x
3. Step 3: Cross multiply
   156,920.18x = 216,559.91 × 88,016.11
4. Step 4: Simplify right side
   156,920.18x = 19,060,761,350.89
5. Step 5: Solve for x
   x = 19,060,761,350.89/156,920.18
6. Step 6: Final answer
   x = 121,467.88