Finding the Fourth Proportional to 78,119.96, 107,804.94 and 42,309.86

Step by Step Solution

1. Step 1: Write the proportion equation
   78,119.96 : 107,804.94 = 42,309.86 : x
2. Step 2: Convert to fraction form
   78,119.96/107,804.94 = 42,309.86/x
3. Step 3: Cross multiply
   78,119.96x = 107,804.94 × 42,309.86
4. Step 4: Simplify right side
   78,119.96x = 4,561,211,918.71
5. Step 5: Solve for x
   x = 4,561,211,918.71/78,119.96
6. Step 6: Final answer
   x = 58,387.28