Finding the Fourth Proportional to 111,921, 154,462.08 and 83,577.48

Step by Step Solution

1. Step 1: Write the proportion equation
   111,921 : 154,462.08 = 83,577.48 : x
2. Step 2: Convert to fraction form
   111,921/154,462.08 = 83,577.48/x
3. Step 3: Cross multiply
   111,921x = 154,462.08 × 83,577.48
4. Step 4: Simplify right side
   111,921x = 12,909,551,401.96
5. Step 5: Solve for x
   x = 12,909,551,401.96/111,921
6. Step 6: Final answer
   x = 115,345.21