Finding the Fourth Proportional to 52,740, 72,781.20 and 29,188

Step by Step Solution

1. Step 1: Write the proportion equation
   52,740 : 72,781.20 = 29,188 : x
2. Step 2: Convert to fraction form
   52,740/72,781.20 = 29,188/x
3. Step 3: Cross multiply
   52,740x = 72,781.20 × 29,188
4. Step 4: Simplify right side
   52,740x = 2,124,337,665.60
5. Step 5: Solve for x
   x = 2,124,337,665.60/52,740
6. Step 6: Final answer
   x = 40,279.44