Finding the Fourth Proportional to 87,669.31, 120,977.56 and 49,430.22

Step by Step Solution

1. Step 1: Write the proportion equation
   87,669.31 : 120,977.56 = 49,430.22 : x
2. Step 2: Convert to fraction form
   87,669.31/120,977.56 = 49,430.22/x
3. Step 3: Cross multiply
   87,669.31x = 120,977.56 × 49,430.22
4. Step 4: Simplify right side
   87,669.31x = 5,979,947,405.86
5. Step 5: Solve for x
   x = 5,979,947,405.86/87,669.31
6. Step 6: Final answer
   x = 68,210.27