Finding the Fourth Proportional to 69,308.38, 103,461.24 and 60,900.78

Step by Step Solution

1. Step 1: Write the proportion equation
   69,308.38 : 103,461.24 = 60,900.78 : x
2. Step 2: Convert to fraction form
   69,308.38/103,461.24 = 60,900.78/x
3. Step 3: Cross multiply
   69,308.38x = 103,461.24 × 60,900.78
4. Step 4: Simplify right side
   69,308.38x = 6,300,870,215.77
5. Step 5: Solve for x
   x = 6,300,870,215.77/69,308.38
6. Step 6: Final answer
   x = 90,910.65