Finding the Fourth Proportional to 78,119.37, 107,804.32 and 42,309.07

Step by Step Solution

1. Step 1: Write the proportion equation
   78,119.37 : 107,804.32 = 42,309.07 : x
2. Step 2: Convert to fraction form
   78,119.37/107,804.32 = 42,309.07/x
3. Step 3: Cross multiply
   78,119.37x = 107,804.32 × 42,309.07
4. Step 4: Simplify right side
   78,119.37x = 4,561,100,145.90
5. Step 5: Solve for x
   x = 4,561,100,145.90/78,119.37
6. Step 6: Final answer
   x = 58,386.29