Finding the Fourth Proportional to 563,496.72, 845,294.28 and 142,772.59

Step by Step Solution

1. Step 1: Write the proportion equation
   563,496.72 : 845,294.28 = 142,772.59 : x
2. Step 2: Convert to fraction form
   563,496.72/845,294.28 = 142,772.59/x
3. Step 3: Cross multiply
   563,496.72x = 845,294.28 × 142,772.59
4. Step 4: Simplify right side
   563,496.72x = 120,684,853,667.79
5. Step 5: Solve for x
   x = 120,684,853,667.79/563,496.72
6. Step 6: Final answer
   x = 214,171.35