Finding the Fourth Proportional to 91,967.10, 137,996.81 and 42,042.75

Step by Step Solution

1. Step 1: Write the proportion equation
   91,967.10 : 137,996.81 = 42,042.75 : x
2. Step 2: Convert to fraction form
   91,967.10/137,996.81 = 42,042.75/x
3. Step 3: Cross multiply
   91,967.10x = 137,996.81 × 42,042.75
4. Step 4: Simplify right side
   91,967.10x = 5,801,765,050.08
5. Step 5: Solve for x
   x = 5,801,765,050.08/91,967.10
6. Step 6: Final answer
   x = 63,085.23