Finding the Fourth Proportional to 115,131.34, 172,702.41 and 70,730.38

Step by Step Solution

1. Step 1: Write the proportion equation
   115,131.34 : 172,702.41 = 70,730.38 : x
2. Step 2: Convert to fraction form
   115,131.34/172,702.41 = 70,730.38/x
3. Step 3: Cross multiply
   115,131.34x = 172,702.41 × 70,730.38
4. Step 4: Simplify right side
   115,131.34x = 12,215,307,086.22
5. Step 5: Solve for x
   x = 12,215,307,086.22/115,131.34
6. Step 6: Final answer
   x = 106,098.89