Finding the Fourth Proportional to 78,300.38, 108,101.32 and 51,487.76

Step by Step Solution

1. Step 1: Write the proportion equation
   78,300.38 : 108,101.32 = 51,487.76 : x
2. Step 2: Convert to fraction form
   78,300.38/108,101.32 = 51,487.76/x
3. Step 3: Cross multiply
   78,300.38x = 108,101.32 × 51,487.76
4. Step 4: Simplify right side
   78,300.38x = 5,565,894,819.84
5. Step 5: Solve for x
   x = 5,565,894,819.84/78,300.38
6. Step 6: Final answer
   x = 71,083.88