Finding the Fourth Proportional to 73,503.45, 101,491.79 and 56,480.76

Step by Step Solution

1. Step 1: Write the proportion equation
   73,503.45 : 101,491.79 = 56,480.76 : x
2. Step 2: Convert to fraction form
   73,503.45/101,491.79 = 56,480.76/x
3. Step 3: Cross multiply
   73,503.45x = 101,491.79 × 56,480.76
4. Step 4: Simplify right side
   73,503.45x = 5,732,333,150.56
5. Step 5: Solve for x
   x = 5,732,333,150.56/73,503.45
6. Step 6: Final answer
   x = 77,987.27