Finding the Fourth Proportional to 111,074.76, 153,123.71 and 79,188.30

Step by Step Solution

1. Step 1: Write the proportion equation
   111,074.76 : 153,123.71 = 79,188.30 : x
2. Step 2: Convert to fraction form
   111,074.76/153,123.71 = 79,188.30/x
3. Step 3: Cross multiply
   111,074.76x = 153,123.71 × 79,188.30
4. Step 4: Simplify right side
   111,074.76x = 12,125,605,888.65
5. Step 5: Solve for x
   x = 12,125,605,888.65/111,074.76
6. Step 6: Final answer
   x = 109,166.17