Finding the Fourth Proportional to 162,436.72, 224,038.56 and 139,813.60

Step by Step Solution

1. Step 1: Write the proportion equation
   162,436.72 : 224,038.56 = 139,813.60 : x
2. Step 2: Convert to fraction form
   162,436.72/224,038.56 = 139,813.60/x
3. Step 3: Cross multiply
   162,436.72x = 224,038.56 × 139,813.60
4. Step 4: Simplify right side
   162,436.72x = 31,323,637,612.42
5. Step 5: Solve for x
   x = 31,323,637,612.42/162,436.72
6. Step 6: Final answer
   x = 192,835.94