Finding the Fourth Proportional to 401,348.76, 602,111.88 and 135,100.50

Step by Step Solution

1. Step 1: Write the proportion equation
   401,348.76 : 602,111.88 = 135,100.50 : x
2. Step 2: Convert to fraction form
   401,348.76/602,111.88 = 135,100.50/x
3. Step 3: Cross multiply
   401,348.76x = 602,111.88 × 135,100.50
4. Step 4: Simplify right side
   401,348.76x = 81,345,616,043.94
5. Step 5: Solve for x
   x = 81,345,616,043.94/401,348.76
6. Step 6: Final answer
   x = 202,680.62