Finding the Fourth Proportional to 78,301.38, 108,102.69 and 51,488.76

Step by Step Solution

1. Step 1: Write the proportion equation
   78,301.38 : 108,102.69 = 51,488.76 : x
2. Step 2: Convert to fraction form
   78,301.38/108,102.69 = 51,488.76/x
3. Step 3: Cross multiply
   78,301.38x = 108,102.69 × 51,488.76
4. Step 4: Simplify right side
   78,301.38x = 5,566,073,460.76
5. Step 5: Solve for x
   x = 5,566,073,460.76/78,301.38
6. Step 6: Final answer
   x = 71,085.25