Finding the Fourth Proportional to 85,300.32, 127,978.74 and 26,136.54

Step by Step Solution

1. Step 1: Write the proportion equation
   85,300.32 : 127,978.74 = 26,136.54 : x
2. Step 2: Convert to fraction form
   85,300.32/127,978.74 = 26,136.54/x
3. Step 3: Cross multiply
   85,300.32x = 127,978.74 × 26,136.54
4. Step 4: Simplify right side
   85,300.32x = 3,344,921,457.16
5. Step 5: Solve for x
   x = 3,344,921,457.16/85,300.32
6. Step 6: Final answer
   x = 39,213.47