Finding the Fourth Proportional to 540,801.78, 811,140.71 and 141,481.10

Step by Step Solution

1. Step 1: Write the proportion equation
   540,801.78 : 811,140.71 = 141,481.10 : x
2. Step 2: Convert to fraction form
   540,801.78/811,140.71 = 141,481.10/x
3. Step 3: Cross multiply
   540,801.78x = 811,140.71 × 141,481.10
4. Step 4: Simplify right side
   540,801.78x = 114,761,075,142.47
5. Step 5: Solve for x
   x = 114,761,075,142.47/540,801.78
6. Step 6: Final answer
   x = 212,205.43