Finding the Fourth Proportional to 87,111.90, 120,211.02 and 49,385.34

Step by Step Solution

1. Step 1: Write the proportion equation
   87,111.90 : 120,211.02 = 49,385.34 : x
2. Step 2: Convert to fraction form
   87,111.90/120,211.02 = 49,385.34/x
3. Step 3: Cross multiply
   87,111.90x = 120,211.02 × 49,385.34
4. Step 4: Simplify right side
   87,111.90x = 5,936,662,094.45
5. Step 5: Solve for x
   x = 5,936,662,094.45/87,111.90
6. Step 6: Final answer
   x = 68,149.84