Finding the Fourth Proportional to 78,157.49, 107,857.31 and 42,347.52

Step by Step Solution

1. Step 1: Write the proportion equation
   78,157.49 : 107,857.31 = 42,347.52 : x
2. Step 2: Convert to fraction form
   78,157.49/107,857.31 = 42,347.52/x
3. Step 3: Cross multiply
   78,157.49x = 107,857.31 × 42,347.52
4. Step 4: Simplify right side
   78,157.49x = 4,567,489,380.63
5. Step 5: Solve for x
   x = 4,567,489,380.63/78,157.49
6. Step 6: Final answer
   x = 58,439.56