Finding the Fourth Proportional to 91,031.34, 136,566.51 and 31,868.94

Step by Step Solution

1. Step 1: Write the proportion equation
   91,031.34 : 136,566.51 = 31,868.94 : x
2. Step 2: Convert to fraction form
   91,031.34/136,566.51 = 31,868.94/x
3. Step 3: Cross multiply
   91,031.34x = 136,566.51 × 31,868.94
4. Step 4: Simplify right side
   91,031.34x = 4,352,229,913.20
5. Step 5: Solve for x
   x = 4,352,229,913.20/91,031.34
6. Step 6: Final answer
   x = 47,810.24