Finding the Fourth Proportional to 86,979.34, 130,527.42 and 31,575.34

Step by Step Solution

1. Step 1: Write the proportion equation
   86,979.34 : 130,527.42 = 31,575.34 : x
2. Step 2: Convert to fraction form
   86,979.34/130,527.42 = 31,575.34/x
3. Step 3: Cross multiply
   86,979.34x = 130,527.42 × 31,575.34
4. Step 4: Simplify right side
   86,979.34x = 4,121,447,665.82
5. Step 5: Solve for x
   x = 4,121,447,665.82/86,979.34
6. Step 6: Final answer
   x = 47,384.21