Finding the Fourth Proportional to 56,472.10, 77,933.49 and 30,978.52

Step by Step Solution

1. Step 1: Write the proportion equation
   56,472.10 : 77,933.49 = 30,978.52 : x
2. Step 2: Convert to fraction form
   56,472.10/77,933.49 = 30,978.52/x
3. Step 3: Cross multiply
   56,472.10x = 77,933.49 × 30,978.52
4. Step 4: Simplify right side
   56,472.10x = 2,414,264,041.89
5. Step 5: Solve for x
   x = 2,414,264,041.89/56,472.10
6. Step 6: Final answer
   x = 42,751.45