Finding the Fourth Proportional to 78,248.34, 107,982.76 and 42,438.34

Step by Step Solution

1. Step 1: Write the proportion equation
   78,248.34 : 107,982.76 = 42,438.34 : x
2. Step 2: Convert to fraction form
   78,248.34/107,982.76 = 42,438.34/x
3. Step 3: Cross multiply
   78,248.34x = 107,982.76 × 42,438.34
4. Step 4: Simplify right side
   78,248.34x = 4,582,609,083.02
5. Step 5: Solve for x
   x = 4,582,609,083.02/78,248.34
6. Step 6: Final answer
   x = 58,564.94