Finding the Fourth Proportional to 939,667.50, 1,296,742.10 and 509,947.72

Step by Step Solution

1. Step 1: Write the proportion equation
   939,667.50 : 1,296,742.10 = 509,947.72 : x
2. Step 2: Convert to fraction form
   939,667.50/1,296,742.10 = 509,947.72/x
3. Step 3: Cross multiply
   939,667.50x = 1,296,742.10 × 509,947.72
4. Step 4: Simplify right side
   939,667.50x = 661,270,671,531.42
5. Step 5: Solve for x
   x = 661,270,671,531.42/939,667.50
6. Step 6: Final answer
   x = 703,728.36