Finding the Fourth Proportional to 149,541.72, 224,638.20 and 90,405.24

Step by Step Solution

1. Step 1: Write the proportion equation
   149,541.72 : 224,638.20 = 90,405.24 : x
2. Step 2: Convert to fraction form
   149,541.72/224,638.20 = 90,405.24/x
3. Step 3: Cross multiply
   149,541.72x = 224,638.20 × 90,405.24
4. Step 4: Simplify right side
   149,541.72x = 20,308,470,384.17
5. Step 5: Solve for x
   x = 20,308,470,384.17/149,541.72
6. Step 6: Final answer
   x = 135,804.71