Finding the Fourth Proportional to 61,085.48, 91,642.56 and 18,963.41

Step by Step Solution

1. Step 1: Write the proportion equation
   61,085.48 : 91,642.56 = 18,963.41 : x
2. Step 2: Convert to fraction form
   61,085.48/91,642.56 = 18,963.41/x
3. Step 3: Cross multiply
   61,085.48x = 91,642.56 × 18,963.41
4. Step 4: Simplify right side
   61,085.48x = 1,737,854,980.52
5. Step 5: Solve for x
   x = 1,737,854,980.52/61,085.48
6. Step 6: Final answer
   x = 28,449.56