Finding the Fourth Proportional to 111,920, 154,460.70 and 83,576.48

Step by Step Solution

1. Step 1: Write the proportion equation
   111,920 : 154,460.70 = 83,576.48 : x
2. Step 2: Convert to fraction form
   111,920/154,460.70 = 83,576.48/x
3. Step 3: Cross multiply
   111,920x = 154,460.70 × 83,576.48
4. Step 4: Simplify right side
   111,920x = 12,909,281,604.34
5. Step 5: Solve for x
   x = 12,909,281,604.34/111,920
6. Step 6: Final answer
   x = 115,343.83