Finding the Fourth Proportional to 141,112.05, 211,613.85 and 51,128.32

Step by Step Solution

1. Step 1: Write the proportion equation
   141,112.05 : 211,613.85 = 51,128.32 : x
2. Step 2: Convert to fraction form
   141,112.05/211,613.85 = 51,128.32/x
3. Step 3: Cross multiply
   141,112.05x = 211,613.85 × 51,128.32
4. Step 4: Simplify right side
   141,112.05x = 10,819,460,383.59
5. Step 5: Solve for x
   x = 10,819,460,383.59/141,112.05
6. Step 6: Final answer
   x = 76,672.83