Finding the Fourth Proportional to 111,064.91, 153,110.15 and 79,178.45

Step by Step Solution

1. Step 1: Write the proportion equation
   111,064.91 : 153,110.15 = 79,178.45 : x
2. Step 2: Convert to fraction form
   111,064.91/153,110.15 = 79,178.45/x
3. Step 3: Cross multiply
   111,064.91x = 153,110.15 × 79,178.45
4. Step 4: Simplify right side
   111,064.91x = 12,123,023,194.82
5. Step 5: Solve for x
   x = 12,123,023,194.82/111,064.91
6. Step 6: Final answer
   x = 109,152.60