Finding the Fourth Proportional to 174,443.10, 261,779.85 and 99,563.10

Step by Step Solution

1. Step 1: Write the proportion equation
   174,443.10 : 261,779.85 = 99,563.10 : x
2. Step 2: Convert to fraction form
   174,443.10/261,779.85 = 99,563.10/x
3. Step 3: Cross multiply
   174,443.10x = 261,779.85 × 99,563.10
4. Step 4: Simplify right side
   174,443.10x = 26,063,613,383.54
5. Step 5: Solve for x
   x = 26,063,613,383.54/174,443.10
6. Step 6: Final answer
   x = 149,410.40