Finding the Fourth Proportional to 61,041.75, 91,978.56 and 50,191.50

Step by Step Solution

1. Step 1: Write the proportion equation
   61,041.75 : 91,978.56 = 50,191.50 : x
2. Step 2: Convert to fraction form
   61,041.75/91,978.56 = 50,191.50/x
3. Step 3: Cross multiply
   61,041.75x = 91,978.56 × 50,191.50
4. Step 4: Simplify right side
   61,041.75x = 4,616,541,894.24
5. Step 5: Solve for x
   x = 4,616,541,894.24/61,041.75
6. Step 6: Final answer
   x = 75,629.25