Finding the Fourth Proportional to 112,975.56, 169,491.59 and 79,760.50

Step by Step Solution

1. Step 1: Write the proportion equation
   112,975.56 : 169,491.59 = 79,760.50 : x
2. Step 2: Convert to fraction form
   112,975.56/169,491.59 = 79,760.50/x
3. Step 3: Cross multiply
   112,975.56x = 169,491.59 × 79,760.50
4. Step 4: Simplify right side
   112,975.56x = 13,518,733,440.77
5. Step 5: Solve for x
   x = 13,518,733,440.77/112,975.56
6. Step 6: Final answer
   x = 119,660.69