Finding the Fourth Proportional to 78,132.01, 107,822.21 and 42,321.91

Step by Step Solution

1. Step 1: Write the proportion equation
   78,132.01 : 107,822.21 = 42,321.91 : x
2. Step 2: Convert to fraction form
   78,132.01/107,822.21 = 42,321.91/x
3. Step 3: Cross multiply
   78,132.01x = 107,822.21 × 42,321.91
4. Step 4: Simplify right side
   78,132.01x = 4,563,241,867.62
5. Step 5: Solve for x
   x = 4,563,241,867.62/78,132.01
6. Step 6: Final answer
   x = 58,404.26