Finding the Fourth Proportional to 61,046.90, 91,422.71 and 52,780.04

Step by Step Solution

1. Step 1: Write the proportion equation
   61,046.90 : 91,422.71 = 52,780.04 : x
2. Step 2: Convert to fraction form
   61,046.90/91,422.71 = 52,780.04/x
3. Step 3: Cross multiply
   61,046.90x = 91,422.71 × 52,780.04
4. Step 4: Simplify right side
   61,046.90x = 4,825,293,767.62
5. Step 5: Solve for x
   x = 4,825,293,767.62/61,046.90
6. Step 6: Final answer
   x = 79,042.41