Finding the Fourth Proportional to 69,089.37, 103,635.81 and 51,669.78

Step by Step Solution

1. Step 1: Write the proportion equation
   69,089.37 : 103,635.81 = 51,669.78 : x
2. Step 2: Convert to fraction form
   69,089.37/103,635.81 = 51,669.78/x
3. Step 3: Cross multiply
   69,089.37x = 103,635.81 × 51,669.78
4. Step 4: Simplify right side
   69,089.37x = 5,354,839,502.82
5. Step 5: Solve for x
   x = 5,354,839,502.82/69,089.37
6. Step 6: Final answer
   x = 77,505.98