Finding the Fourth Proportional to 53,483.55, 73,809 and 30,820.74

Step by Step Solution

1. Step 1: Write the proportion equation
   53,483.55 : 73,809 = 30,820.74 : x
2. Step 2: Convert to fraction form
   53,483.55/73,809 = 30,820.74/x
3. Step 3: Cross multiply
   53,483.55x = 73,809 × 30,820.74
4. Step 4: Simplify right side
   53,483.55x = 2,274,847,998.66
5. Step 5: Solve for x
   x = 2,274,847,998.66/53,483.55
6. Step 6: Final answer
   x = 42,533.60