Finding the Fourth Proportional to 52,488.69, 72,434.84 and 30,978.92

Step by Step Solution

1. Step 1: Write the proportion equation
   52,488.69 : 72,434.84 = 30,978.92 : x
2. Step 2: Convert to fraction form
   52,488.69/72,434.84 = 30,978.92/x
3. Step 3: Cross multiply
   52,488.69x = 72,434.84 × 30,978.92
4. Step 4: Simplify right side
   52,488.69x = 2,243,952,596.50
5. Step 5: Solve for x
   x = 2,243,952,596.50/52,488.69
6. Step 6: Final answer
   x = 42,751.16