Finding the Fourth Proportional to 78,056.51, 107,718.77 and 42,247.29

Step by Step Solution

1. Step 1: Write the proportion equation
   78,056.51 : 107,718.77 = 42,247.29 : x
2. Step 2: Convert to fraction form
   78,056.51/107,718.77 = 42,247.29/x
3. Step 3: Cross multiply
   78,056.51x = 107,718.77 × 42,247.29
4. Step 4: Simplify right side
   78,056.51x = 4,550,825,576.04
5. Step 5: Solve for x
   x = 4,550,825,576.04/78,056.51
6. Step 6: Final answer
   x = 58,301.68