Finding the Fourth Proportional to 52,978.96, 72,980.40 and 45,400.96

Step by Step Solution

1. Step 1: Write the proportion equation
   52,978.96 : 72,980.40 = 45,400.96 : x
2. Step 2: Convert to fraction form
   52,978.96/72,980.40 = 45,400.96/x
3. Step 3: Cross multiply
   52,978.96x = 72,980.40 × 45,400.96
4. Step 4: Simplify right side
   52,978.96x = 3,313,380,221.18
5. Step 5: Solve for x
   x = 3,313,380,221.18/52,978.96
6. Step 6: Final answer
   x = 62,541.44