Finding the Fourth Proportional to 426,158.63, 638,788.55 and 141,773.00

Step by Step Solution

1. Step 1: Write the proportion equation
   426,158.63 : 638,788.55 = 141,773.00 : x
2. Step 2: Convert to fraction form
   426,158.63/638,788.55 = 141,773.00/x
3. Step 3: Cross multiply
   426,158.63x = 638,788.55 × 141,773.00
4. Step 4: Simplify right side
   426,158.63x = 90,562,968,789.53
5. Step 5: Solve for x
   x = 90,562,968,789.53/426,158.63
6. Step 6: Final answer
   x = 212,509.99