Finding the Fourth Proportional to 215,005.39, 296,748.56 and 142,409.14

Step by Step Solution

1. Step 1: Write the proportion equation
   215,005.39 : 296,748.56 = 142,409.14 : x
2. Step 2: Convert to fraction form
   215,005.39/296,748.56 = 142,409.14/x
3. Step 3: Cross multiply
   215,005.39x = 296,748.56 × 142,409.14
4. Step 4: Simplify right side
   215,005.39x = 42,259,706,839.99
5. Step 5: Solve for x
   x = 42,259,706,839.99/215,005.39
6. Step 6: Final answer
   x = 196,551.85