Finding the Fourth Proportional to 78,637.34, 108,520.78 and 42,827.30

Step by Step Solution

1. Step 1: Write the proportion equation
   78,637.34 : 108,520.78 = 42,827.30 : x
2. Step 2: Convert to fraction form
   78,637.34/108,520.78 = 42,827.30/x
3. Step 3: Cross multiply
   78,637.34x = 108,520.78 × 42,827.30
4. Step 4: Simplify right side
   78,637.34x = 4,647,652,001.29
5. Step 5: Solve for x
   x = 4,647,652,001.29/78,637.34
6. Step 6: Final answer
   x = 59,102.36