Finding the Fourth Proportional to 111,065.03, 153,110.32 and 79,178.57

Step by Step Solution

1. Step 1: Write the proportion equation
   111,065.03 : 153,110.32 = 79,178.57 : x
2. Step 2: Convert to fraction form
   111,065.03/153,110.32 = 79,178.57/x
3. Step 3: Cross multiply
   111,065.03x = 153,110.32 × 79,178.57
4. Step 4: Simplify right side
   111,065.03x = 12,123,056,189.84
5. Step 5: Solve for x
   x = 12,123,056,189.84/111,065.03
6. Step 6: Final answer
   x = 109,152.77