Finding the Fourth Proportional to 61,393.88, 91,642.60 and 52,684.76

Step by Step Solution

1. Step 1: Write the proportion equation
   61,393.88 : 91,642.60 = 52,684.76 : x
2. Step 2: Convert to fraction form
   61,393.88/91,642.60 = 52,684.76/x
3. Step 3: Cross multiply
   61,393.88x = 91,642.60 × 52,684.76
4. Step 4: Simplify right side
   61,393.88x = 4,828,168,386.78
5. Step 5: Solve for x
   x = 4,828,168,386.78/61,393.88
6. Step 6: Final answer
   x = 78,642.50