Finding the Fourth Proportional to 90,240.72, 135,323.80 and 34,071.24

Step by Step Solution

1. Step 1: Write the proportion equation
   90,240.72 : 135,323.80 = 34,071.24 : x
2. Step 2: Convert to fraction form
   90,240.72/135,323.80 = 34,071.24/x
3. Step 3: Cross multiply
   90,240.72x = 135,323.80 × 34,071.24
4. Step 4: Simplify right side
   90,240.72x = 4,610,649,667.51
5. Step 5: Solve for x
   x = 4,610,649,667.51/90,240.72
6. Step 6: Final answer
   x = 51,092.78