Finding the Fourth Proportional to 52,828.48, 72,902.88 and 30,472

Step by Step Solution

1. Step 1: Write the proportion equation
   52,828.48 : 72,902.88 = 30,472 : x
2. Step 2: Convert to fraction form
   52,828.48/72,902.88 = 30,472/x
3. Step 3: Cross multiply
   52,828.48x = 72,902.88 × 30,472
4. Step 4: Simplify right side
   52,828.48x = 2,221,496,559.36
5. Step 5: Solve for x
   x = 2,221,496,559.36/52,828.48
6. Step 6: Final answer
   x = 42,051.12