Finding the Fourth Proportional to 115,972.12, 174,036.06 and 42,100.12

Step by Step Solution

1. Step 1: Write the proportion equation
   115,972.12 : 174,036.06 = 42,100.12 : x
2. Step 2: Convert to fraction form
   115,972.12/174,036.06 = 42,100.12/x
3. Step 3: Cross multiply
   115,972.12x = 174,036.06 × 42,100.12
4. Step 4: Simplify right side
   115,972.12x = 7,326,939,010.33
5. Step 5: Solve for x
   x = 7,326,939,010.33/115,972.12
6. Step 6: Final answer
   x = 63,178.45