Finding the Fourth Proportional to 400,978.63, 601,523.23 and 134,759.78

Step by Step Solution

1. Step 1: Write the proportion equation
   400,978.63 : 601,523.23 = 134,759.78 : x
2. Step 2: Convert to fraction form
   400,978.63/601,523.23 = 134,759.78/x
3. Step 3: Cross multiply
   400,978.63x = 601,523.23 × 134,759.78
4. Step 4: Simplify right side
   400,978.63x = 81,061,138,139.69
5. Step 5: Solve for x
   x = 81,061,138,139.69/400,978.63
6. Step 6: Final answer
   x = 202,158.25