Finding the Fourth Proportional to 111,894.37, 167,654.72 and 78,554.75

Step by Step Solution

1. Step 1: Write the proportion equation
   111,894.37 : 167,654.72 = 78,554.75 : x
2. Step 2: Convert to fraction form
   111,894.37/167,654.72 = 78,554.75/x
3. Step 3: Cross multiply
   111,894.37x = 167,654.72 × 78,554.75
4. Step 4: Simplify right side
   111,894.37x = 13,170,073,384.87
5. Step 5: Solve for x
   x = 13,170,073,384.87/111,894.37
6. Step 6: Final answer
   x = 117,700.95