Finding the Fourth Proportional to 76,272.91, 105,139.95 and 53,548.15

Step by Step Solution

1. Step 1: Write the proportion equation
   76,272.91 : 105,139.95 = 53,548.15 : x
2. Step 2: Convert to fraction form
   76,272.91/105,139.95 = 53,548.15/x
3. Step 3: Cross multiply
   76,272.91x = 105,139.95 × 53,548.15
4. Step 4: Simplify right side
   76,272.91x = 5,630,049,813.59
5. Step 5: Solve for x
   x = 5,630,049,813.59/76,272.91
6. Step 6: Final answer
   x = 73,814.54