Finding the Fourth Proportional to 65,311.88, 89,970.42 and 47,354.12

Step by Step Solution

1. Step 1: Write the proportion equation
   65,311.88 : 89,970.42 = 47,354.12 : x
2. Step 2: Convert to fraction form
   65,311.88/89,970.42 = 47,354.12/x
3. Step 3: Cross multiply
   65,311.88x = 89,970.42 × 47,354.12
4. Step 4: Simplify right side
   65,311.88x = 4,260,470,065.13
5. Step 5: Solve for x
   x = 4,260,470,065.13/65,311.88
6. Step 6: Final answer
   x = 65,232.70