Finding the Fourth Proportional to 78,623.34, 108,496.98 and 42,813.78

Step by Step Solution

1. Step 1: Write the proportion equation
   78,623.34 : 108,496.98 = 42,813.78 : x
2. Step 2: Convert to fraction form
   78,623.34/108,496.98 = 42,813.78/x
3. Step 3: Cross multiply
   78,623.34x = 108,496.98 × 42,813.78
4. Step 4: Simplify right side
   78,623.34x = 4,645,165,832.38
5. Step 5: Solve for x
   x = 4,645,165,832.38/78,623.34
6. Step 6: Final answer
   x = 59,081.26