Finding the Fourth Proportional to 52,978.50, 73,120.05 and 30,622.50

Step by Step Solution

1. Step 1: Write the proportion equation
   52,978.50 : 73,120.05 = 30,622.50 : x
2. Step 2: Convert to fraction form
   52,978.50/73,120.05 = 30,622.50/x
3. Step 3: Cross multiply
   52,978.50x = 73,120.05 × 30,622.50
4. Step 4: Simplify right side
   52,978.50x = 2,239,118,731.13
5. Step 5: Solve for x
   x = 2,239,118,731.13/52,978.50
6. Step 6: Final answer
   x = 42,264.67