Finding the Fourth Proportional to 109,404.31, 150,991.32 and 61,666.36

Step by Step Solution

1. Step 1: Write the proportion equation
   109,404.31 : 150,991.32 = 61,666.36 : x
2. Step 2: Convert to fraction form
   109,404.31/150,991.32 = 61,666.36/x
3. Step 3: Cross multiply
   109,404.31x = 150,991.32 × 61,666.36
4. Step 4: Simplify right side
   109,404.31x = 9,311,085,096.00
5. Step 5: Solve for x
   x = 9,311,085,096.00/109,404.31
6. Step 6: Final answer
   x = 85,107.11