Finding the Fourth Proportional to 78,317.34, 108,078.01 and 42,507.37

Step by Step Solution

1. Step 1: Write the proportion equation
   78,317.34 : 108,078.01 = 42,507.37 : x
2. Step 2: Convert to fraction form
   78,317.34/108,078.01 = 42,507.37/x
3. Step 3: Cross multiply
   78,317.34x = 108,078.01 × 42,507.37
4. Step 4: Simplify right side
   78,317.34x = 4,594,111,959.93
5. Step 5: Solve for x
   x = 4,594,111,959.93/78,317.34
6. Step 6: Final answer
   x = 58,660.21