Finding the Fourth Proportional to 69,085.24, 103,234.50 and 51,875.91

Step by Step Solution

1. Step 1: Write the proportion equation
   69,085.24 : 103,234.50 = 51,875.91 : x
2. Step 2: Convert to fraction form
   69,085.24/103,234.50 = 51,875.91/x
3. Step 3: Cross multiply
   69,085.24x = 103,234.50 × 51,875.91
4. Step 4: Simplify right side
   69,085.24x = 5,355,383,630.90
5. Step 5: Solve for x
   x = 5,355,383,630.90/69,085.24
6. Step 6: Final answer
   x = 77,518.49