Finding the Fourth Proportional to 142,892.20, 214,294.52 and 98,802.28

Step by Step Solution

1. Step 1: Write the proportion equation
   142,892.20 : 214,294.52 = 98,802.28 : x
2. Step 2: Convert to fraction form
   142,892.20/214,294.52 = 98,802.28/x
3. Step 3: Cross multiply
   142,892.20x = 214,294.52 × 98,802.28
4. Step 4: Simplify right side
   142,892.20x = 21,172,787,167.51
5. Step 5: Solve for x
   x = 21,172,787,167.51/142,892.20
6. Step 6: Final answer
   x = 148,173.15