Finding the Fourth Proportional to 91,621.30, 126,438.81 and 55,812.82

Step by Step Solution

1. Step 1: Write the proportion equation
   91,621.30 : 126,438.81 = 55,812.82 : x
2. Step 2: Convert to fraction form
   91,621.30/126,438.81 = 55,812.82/x
3. Step 3: Cross multiply
   91,621.30x = 126,438.81 × 55,812.82
4. Step 4: Simplify right side
   91,621.30x = 7,056,906,543.54
5. Step 5: Solve for x
   x = 7,056,906,543.54/91,621.30
6. Step 6: Final answer
   x = 77,022.55