Finding the Fourth Proportional to 78,145.84, 107,841.31 and 45,874.15

Step by Step Solution

1. Step 1: Write the proportion equation
   78,145.84 : 107,841.31 = 45,874.15 : x
2. Step 2: Convert to fraction form
   78,145.84/107,841.31 = 45,874.15/x
3. Step 3: Cross multiply
   78,145.84x = 107,841.31 × 45,874.15
4. Step 4: Simplify right side
   78,145.84x = 4,947,128,240.38
5. Step 5: Solve for x
   x = 4,947,128,240.38/78,145.84
6. Step 6: Final answer
   x = 63,306.36