Finding the Fourth Proportional to 53,278.46, 73,499.91 and 30,909.50

Step by Step Solution

1. Step 1: Write the proportion equation
   53,278.46 : 73,499.91 = 30,909.50 : x
2. Step 2: Convert to fraction form
   53,278.46/73,499.91 = 30,909.50/x
3. Step 3: Cross multiply
   53,278.46x = 73,499.91 × 30,909.50
4. Step 4: Simplify right side
   53,278.46x = 2,271,845,468.15
5. Step 5: Solve for x
   x = 2,271,845,468.15/53,278.46
6. Step 6: Final answer
   x = 42,640.97