Finding the Fourth Proportional to 61,047.33, 91,423.36 and 52,780.47

Step by Step Solution

1. Step 1: Write the proportion equation
   61,047.33 : 91,423.36 = 52,780.47 : x
2. Step 2: Convert to fraction form
   61,047.33/91,423.36 = 52,780.47/x
3. Step 3: Cross multiply
   61,047.33x = 91,423.36 × 52,780.47
4. Step 4: Simplify right side
   61,047.33x = 4,825,367,909.78
5. Step 5: Solve for x
   x = 4,825,367,909.78/61,047.33
6. Step 6: Final answer
   x = 79,043.06