Finding the Fourth Proportional to 115,127.22, 172,499.91 and 70,012.10

Step by Step Solution

1. Step 1: Write the proportion equation
   115,127.22 : 172,499.91 = 70,012.10 : x
2. Step 2: Convert to fraction form
   115,127.22/172,499.91 = 70,012.10/x
3. Step 3: Cross multiply
   115,127.22x = 172,499.91 × 70,012.10
4. Step 4: Simplify right side
   115,127.22x = 12,077,080,948.91
5. Step 5: Solve for x
   x = 12,077,080,948.91/115,127.22
6. Step 6: Final answer
   x = 104,902.05