Finding the Fourth Proportional to 105,615.12, 158,410.35 and 42,432.69

Step by Step Solution

1. Step 1: Write the proportion equation
   105,615.12 : 158,410.35 = 42,432.69 : x
2. Step 2: Convert to fraction form
   105,615.12/158,410.35 = 42,432.69/x
3. Step 3: Cross multiply
   105,615.12x = 158,410.35 × 42,432.69
4. Step 4: Simplify right side
   105,615.12x = 6,721,777,274.34
5. Step 5: Solve for x
   x = 6,721,777,274.34/105,615.12
6. Step 6: Final answer
   x = 63,644.08