Finding the Fourth Proportional to 91,436.71, 126,177.59 and 51,142.69

Step by Step Solution

1. Step 1: Write the proportion equation
   91,436.71 : 126,177.59 = 51,142.69 : x
2. Step 2: Convert to fraction form
   91,436.71/126,177.59 = 51,142.69/x
3. Step 3: Cross multiply
   91,436.71x = 126,177.59 × 51,142.69
4. Step 4: Simplify right side
   91,436.71x = 6,453,061,296.30
5. Step 5: Solve for x
   x = 6,453,061,296.30/91,436.71
6. Step 6: Final answer
   x = 70,574.08