Finding the Fourth Proportional to 69,648.34, 104,488.72 and 55,470.50

Step by Step Solution

1. Step 1: Write the proportion equation
   69,648.34 : 104,488.72 = 55,470.50 : x
2. Step 2: Convert to fraction form
   69,648.34/104,488.72 = 55,470.50/x
3. Step 3: Cross multiply
   69,648.34x = 104,488.72 × 55,470.50
4. Step 4: Simplify right side
   69,648.34x = 5,796,041,542.76
5. Step 5: Solve for x
   x = 5,796,041,542.76/69,648.34
6. Step 6: Final answer
   x = 83,218.66