Finding the Fourth Proportional to 78,141.58, 107,835.03 and 42,331.68

Step by Step Solution

1. Step 1: Write the proportion equation
   78,141.58 : 107,835.03 = 42,331.68 : x
2. Step 2: Convert to fraction form
   78,141.58/107,835.03 = 42,331.68/x
3. Step 3: Cross multiply
   78,141.58x = 107,835.03 × 42,331.68
4. Step 4: Simplify right side
   78,141.58x = 4,564,837,982.75
5. Step 5: Solve for x
   x = 4,564,837,982.75/78,141.58
6. Step 6: Final answer
   x = 58,417.53