Finding the Fourth Proportional to 78,545.34, 117,849.42 and 28,629

Step by Step Solution

1. Step 1: Write the proportion equation
   78,545.34 : 117,849.42 = 28,629 : x
2. Step 2: Convert to fraction form
   78,545.34/117,849.42 = 28,629/x
3. Step 3: Cross multiply
   78,545.34x = 117,849.42 × 28,629
4. Step 4: Simplify right side
   78,545.34x = 3,373,911,045.18
5. Step 5: Solve for x
   x = 3,373,911,045.18/78,545.34
6. Step 6: Final answer
   x = 42,954.95