Finding the Fourth Proportional to 78,141.24, 107,835.42 and 42,331.22

Step by Step Solution

1. Step 1: Write the proportion equation
   78,141.24 : 107,835.42 = 42,331.22 : x
2. Step 2: Convert to fraction form
   78,141.24/107,835.42 = 42,331.22/x
3. Step 3: Cross multiply
   78,141.24x = 107,835.42 × 42,331.22
4. Step 4: Simplify right side
   78,141.24x = 4,564,804,887.81
5. Step 5: Solve for x
   x = 4,564,804,887.81/78,141.24
6. Step 6: Final answer
   x = 58,417.36