Finding the Fourth Proportional to 111,764.10, 167,645.95 and 78,632.27

Step by Step Solution

1. Step 1: Write the proportion equation
   111,764.10 : 167,645.95 = 78,632.27 : x
2. Step 2: Convert to fraction form
   111,764.10/167,645.95 = 78,632.27/x
3. Step 3: Cross multiply
   111,764.10x = 167,645.95 × 78,632.27
4. Step 4: Simplify right side
   111,764.10x = 13,182,380,373.42
5. Step 5: Solve for x
   x = 13,182,380,373.42/111,764.10
6. Step 6: Final answer
   x = 117,948.25