Finding the Fourth Proportional to 91,680.14, 126,518.42 and 51,393.89

Step by Step Solution

1. Step 1: Write the proportion equation
   91,680.14 : 126,518.42 = 51,393.89 : x
2. Step 2: Convert to fraction form
   91,680.14/126,518.42 = 51,393.89/x
3. Step 3: Cross multiply
   91,680.14x = 126,518.42 × 51,393.89
4. Step 4: Simplify right side
   91,680.14x = 6,502,272,870.89
5. Step 5: Solve for x
   x = 6,502,272,870.89/91,680.14
6. Step 6: Final answer
   x = 70,923.47