Finding the Fourth Proportional to 61,423.39, 92,134.77 and 53,078.05

Step by Step Solution

1. Step 1: Write the proportion equation
   61,423.39 : 92,134.77 = 53,078.05 : x
2. Step 2: Convert to fraction form
   61,423.39/92,134.77 = 53,078.05/x
3. Step 3: Cross multiply
   61,423.39x = 92,134.77 × 53,078.05
4. Step 4: Simplify right side
   61,423.39x = 4,890,333,928.80
5. Step 5: Solve for x
   x = 4,890,333,928.80/61,423.39
6. Step 6: Final answer
   x = 79,616.80