Finding the Fourth Proportional to 78,790.23, 108,732.06 and 42,981.57

Step by Step Solution

1. Step 1: Write the proportion equation
   78,790.23 : 108,732.06 = 42,981.57 : x
2. Step 2: Convert to fraction form
   78,790.23/108,732.06 = 42,981.57/x
3. Step 3: Cross multiply
   78,790.23x = 108,732.06 × 42,981.57
4. Step 4: Simplify right side
   78,790.23x = 4,673,474,648.13
5. Step 5: Solve for x
   x = 4,673,474,648.13/78,790.23
6. Step 6: Final answer
   x = 59,315.41