Finding the Fourth Proportional to 260,523.82, 390,581.59 and 102,870.28

Step by Step Solution

1. Step 1: Write the proportion equation
   260,523.82 : 390,581.59 = 102,870.28 : x
2. Step 2: Convert to fraction form
   260,523.82/390,581.59 = 102,870.28/x
3. Step 3: Cross multiply
   260,523.82x = 390,581.59 × 102,870.28
4. Step 4: Simplify right side
   260,523.82x = 40,179,237,526.15
5. Step 5: Solve for x
   x = 40,179,237,526.15/260,523.82
6. Step 6: Final answer
   x = 154,224.81