Finding the Fourth Proportional to 69,086.78, 103,630.16 and 45,707.76

Step by Step Solution

1. Step 1: Write the proportion equation
   69,086.78 : 103,630.16 = 45,707.76 : x
2. Step 2: Convert to fraction form
   69,086.78/103,630.16 = 45,707.76/x
3. Step 3: Cross multiply
   69,086.78x = 103,630.16 × 45,707.76
4. Step 4: Simplify right side
   69,086.78x = 4,736,702,482.04
5. Step 5: Solve for x
   x = 4,736,702,482.04/69,086.78
6. Step 6: Final answer
   x = 68,561.63