Finding the Fourth Proportional to 108,167, 149,311.52 and 81,387.36

Step by Step Solution

1. Step 1: Write the proportion equation
   108,167 : 149,311.52 = 81,387.36 : x
2. Step 2: Convert to fraction form
   108,167/149,311.52 = 81,387.36/x
3. Step 3: Cross multiply
   108,167x = 149,311.52 × 81,387.36
4. Step 4: Simplify right side
   108,167x = 12,152,070,430.39
5. Step 5: Solve for x
   x = 12,152,070,430.39/108,167
6. Step 6: Final answer
   x = 112,345.45