Finding the Fourth Proportional to 141,789.21, 213,074.37 and 75,279.12

Step by Step Solution

1. Step 1: Write the proportion equation
   141,789.21 : 213,074.37 = 75,279.12 : x
2. Step 2: Convert to fraction form
   141,789.21/213,074.37 = 75,279.12/x
3. Step 3: Cross multiply
   141,789.21x = 213,074.37 × 75,279.12
4. Step 4: Simplify right side
   141,789.21x = 16,040,051,068.15
5. Step 5: Solve for x
   x = 16,040,051,068.15/141,789.21
6. Step 6: Final answer
   x = 113,126.03