Finding the Fourth Proportional to 78,541.24, 108,387.38 and 42,731.51

Step by Step Solution

1. Step 1: Write the proportion equation
   78,541.24 : 108,387.38 = 42,731.51 : x
2. Step 2: Convert to fraction form
   78,541.24/108,387.38 = 42,731.51/x
3. Step 3: Cross multiply
   78,541.24x = 108,387.38 × 42,731.51
4. Step 4: Simplify right side
   78,541.24x = 4,631,556,383.69
5. Step 5: Solve for x
   x = 4,631,556,383.69/78,541.24
6. Step 6: Final answer
   x = 58,969.74