Finding the Fourth Proportional to 78,028.69, 107,648.96 and 45,317.54

Step by Step Solution

1. Step 1: Write the proportion equation
   78,028.69 : 107,648.96 = 45,317.54 : x
2. Step 2: Convert to fraction form
   78,028.69/107,648.96 = 45,317.54/x
3. Step 3: Cross multiply
   78,028.69x = 107,648.96 × 45,317.54
4. Step 4: Simplify right side
   78,028.69x = 4,878,386,050.76
5. Step 5: Solve for x
   x = 4,878,386,050.76/78,028.69
6. Step 6: Final answer
   x = 62,520.41