Finding the Fourth Proportional to 156,874.50, 216,483.06 and 87,959.37

Step by Step Solution

1. Step 1: Write the proportion equation
   156,874.50 : 216,483.06 = 87,959.37 : x
2. Step 2: Convert to fraction form
   156,874.50/216,483.06 = 87,959.37/x
3. Step 3: Cross multiply
   156,874.50x = 216,483.06 × 87,959.37
4. Step 4: Simplify right side
   156,874.50x = 19,041,713,573.27
5. Step 5: Solve for x
   x = 19,041,713,573.27/156,874.50
6. Step 6: Final answer
   x = 121,381.83