Finding the Fourth Proportional to 102,155.04, 140,930.64 and 62,388

Step by Step Solution

1. Step 1: Write the proportion equation
   102,155.04 : 140,930.64 = 62,388 : x
2. Step 2: Convert to fraction form
   102,155.04/140,930.64 = 62,388/x
3. Step 3: Cross multiply
   102,155.04x = 140,930.64 × 62,388
4. Step 4: Simplify right side
   102,155.04x = 8,792,380,768.32
5. Step 5: Solve for x
   x = 8,792,380,768.32/102,155.04
6. Step 6: Final answer
   x = 86,068.99