Finding the Fourth Proportional to 201,308.49, 302,061.15 and 142,521.93

Step by Step Solution

1. Step 1: Write the proportion equation
   201,308.49 : 302,061.15 = 142,521.93 : x
2. Step 2: Convert to fraction form
   201,308.49/302,061.15 = 142,521.93/x
3. Step 3: Cross multiply
   201,308.49x = 302,061.15 × 142,521.93
4. Step 4: Simplify right side
   201,308.49x = 43,050,338,076.02
5. Step 5: Solve for x
   x = 43,050,338,076.02/201,308.49
6. Step 6: Final answer
   x = 213,852.57