Finding the Fourth Proportional to 111,937.12, 167,905.50 and 76,770.16

Step by Step Solution

1. Step 1: Write the proportion equation
   111,937.12 : 167,905.50 = 76,770.16 : x
2. Step 2: Convert to fraction form
   111,937.12/167,905.50 = 76,770.16/x
3. Step 3: Cross multiply
   111,937.12x = 167,905.50 × 76,770.16
4. Step 4: Simplify right side
   111,937.12x = 12,890,132,099.88
5. Step 5: Solve for x
   x = 12,890,132,099.88/111,937.12
6. Step 6: Final answer
   x = 115,155.12