Finding the Fourth Proportional to 86,931.94, 130,397.82 and 27,772.15

Step by Step Solution

1. Step 1: Write the proportion equation
   86,931.94 : 130,397.82 = 27,772.15 : x
2. Step 2: Convert to fraction form
   86,931.94/130,397.82 = 27,772.15/x
3. Step 3: Cross multiply
   86,931.94x = 130,397.82 × 27,772.15
4. Step 4: Simplify right side
   86,931.94x = 3,621,427,816.71
5. Step 5: Solve for x
   x = 3,621,427,816.71/86,931.94
6. Step 6: Final answer
   x = 41,658.20