Finding the Fourth Proportional to 78,045.72, 107,691.57 and 45,768.15

Step by Step Solution

1. Step 1: Write the proportion equation
   78,045.72 : 107,691.57 = 45,768.15 : x
2. Step 2: Convert to fraction form
   78,045.72/107,691.57 = 45,768.15/x
3. Step 3: Cross multiply
   78,045.72x = 107,691.57 × 45,768.15
4. Step 4: Simplify right side
   78,045.72x = 4,928,843,929.50
5. Step 5: Solve for x
   x = 4,928,843,929.50/78,045.72
6. Step 6: Final answer
   x = 63,153.29