Finding the Fourth Proportional to 69,644, 96,108.48 and 39,428.72

Step by Step Solution

1. Step 1: Write the proportion equation
   69,644 : 96,108.48 = 39,428.72 : x
2. Step 2: Convert to fraction form
   69,644/96,108.48 = 39,428.72/x
3. Step 3: Cross multiply
   69,644x = 96,108.48 × 39,428.72
4. Step 4: Simplify right side
   69,644x = 3,789,434,347.55
5. Step 5: Solve for x
   x = 3,789,434,347.55/69,644
6. Step 6: Final answer
   x = 54,411.50