Finding the Fourth Proportional to 78,222.15, 107,947.08 and 42,412.71

Step by Step Solution

1. Step 1: Write the proportion equation
   78,222.15 : 107,947.08 = 42,412.71 : x
2. Step 2: Convert to fraction form
   78,222.15/107,947.08 = 42,412.71/x
3. Step 3: Cross multiply
   78,222.15x = 107,947.08 × 42,412.71
4. Step 4: Simplify right side
   78,222.15x = 4,578,328,199.39
5. Step 5: Solve for x
   x = 4,578,328,199.39/78,222.15
6. Step 6: Final answer
   x = 58,529.82