Finding the Fourth Proportional to 105,339.02, 157,996.22 and 42,156.59

Step by Step Solution

1. Step 1: Write the proportion equation
   105,339.02 : 157,996.22 = 42,156.59 : x
2. Step 2: Convert to fraction form
   105,339.02/157,996.22 = 42,156.59/x
3. Step 3: Cross multiply
   105,339.02x = 157,996.22 × 42,156.59
4. Step 4: Simplify right side
   105,339.02x = 6,660,580,867.33
5. Step 5: Solve for x
   x = 6,660,580,867.33/105,339.02
6. Step 6: Final answer
   x = 63,229.95