Finding the Fourth Proportional to 91,561.79, 137,393.72 and 49,440.98

Step by Step Solution

1. Step 1: Write the proportion equation
   91,561.79 : 137,393.72 = 49,440.98 : x
2. Step 2: Convert to fraction form
   91,561.79/137,393.72 = 49,440.98/x
3. Step 3: Cross multiply
   91,561.79x = 137,393.72 × 49,440.98
4. Step 4: Simplify right side
   91,561.79x = 6,792,880,162.65
5. Step 5: Solve for x
   x = 6,792,880,162.65/91,561.79
6. Step 6: Final answer
   x = 74,189.03