Finding the Fourth Proportional to 85,619.72, 118,155.32 and 47,380.87

Step by Step Solution

1. Step 1: Write the proportion equation
   85,619.72 : 118,155.32 = 47,380.87 : x
2. Step 2: Convert to fraction form
   85,619.72/118,155.32 = 47,380.87/x
3. Step 3: Cross multiply
   85,619.72x = 118,155.32 × 47,380.87
4. Step 4: Simplify right side
   85,619.72x = 5,598,301,856.73
5. Step 5: Solve for x
   x = 5,598,301,856.73/85,619.72
6. Step 6: Final answer
   x = 65,385.66