Finding the Fourth Proportional to 69,910.98, 104,778.90 and 55,061.25

Step by Step Solution

1. Step 1: Write the proportion equation
   69,910.98 : 104,778.90 = 55,061.25 : x
2. Step 2: Convert to fraction form
   69,910.98/104,778.90 = 55,061.25/x
3. Step 3: Cross multiply
   69,910.98x = 104,778.90 × 55,061.25
4. Step 4: Simplify right side
   69,910.98x = 5,769,257,207.63
5. Step 5: Solve for x
   x = 5,769,257,207.63/69,910.98
6. Step 6: Final answer
   x = 82,522.91