Finding the Fourth Proportional to 78,241.34, 107,973.10 and 42,431.34

Step by Step Solution

1. Step 1: Write the proportion equation
   78,241.34 : 107,973.10 = 42,431.34 : x
2. Step 2: Convert to fraction form
   78,241.34/107,973.10 = 42,431.34/x
3. Step 3: Cross multiply
   78,241.34x = 107,973.10 × 42,431.34
4. Step 4: Simplify right side
   78,241.34x = 4,581,443,316.95
5. Step 5: Solve for x
   x = 4,581,443,316.95/78,241.34
6. Step 6: Final answer
   x = 58,555.28