Finding the Fourth Proportional to 78,081.15, 107,750.70 and 42,270.84

Step by Step Solution

1. Step 1: Write the proportion equation
   78,081.15 : 107,750.70 = 42,270.84 : x
2. Step 2: Convert to fraction form
   78,081.15/107,750.70 = 42,270.84/x
3. Step 3: Cross multiply
   78,081.15x = 107,750.70 × 42,270.84
4. Step 4: Simplify right side
   78,081.15x = 4,554,712,599.59
5. Step 5: Solve for x
   x = 4,554,712,599.59/78,081.15
6. Step 6: Final answer
   x = 58,333.06