Finding the Fourth Proportional to 240,152.51, 360,228.72 and 90,426.35

Step by Step Solution

1. Step 1: Write the proportion equation
   240,152.51 : 360,228.72 = 90,426.35 : x
2. Step 2: Convert to fraction form
   240,152.51/360,228.72 = 90,426.35/x
3. Step 3: Cross multiply
   240,152.51x = 360,228.72 × 90,426.35
4. Step 4: Simplify right side
   240,152.51x = 32,574,168,314.77
5. Step 5: Solve for x
   x = 32,574,168,314.77/240,152.51
6. Step 6: Final answer
   x = 135,639.51