Finding the Fourth Proportional to 85,111.50, 117,457.52 and 47,385.75

Step by Step Solution

1. Step 1: Write the proportion equation
   85,111.50 : 117,457.52 = 47,385.75 : x
2. Step 2: Convert to fraction form
   85,111.50/117,457.52 = 47,385.75/x
3. Step 3: Cross multiply
   85,111.50x = 117,457.52 × 47,385.75
4. Step 4: Simplify right side
   85,111.50x = 5,565,812,441.41
5. Step 5: Solve for x
   x = 5,565,812,441.41/85,111.50
6. Step 6: Final answer
   x = 65,394.36