Finding the Fourth Proportional to 56,483.82, 78,028.78 and 45,138.44

Step by Step Solution

1. Step 1: Write the proportion equation
   56,483.82 : 78,028.78 = 45,138.44 : x
2. Step 2: Convert to fraction form
   56,483.82/78,028.78 = 45,138.44/x
3. Step 3: Cross multiply
   56,483.82x = 78,028.78 × 45,138.44
4. Step 4: Simplify right side
   56,483.82x = 3,522,097,404.30
5. Step 5: Solve for x
   x = 3,522,097,404.30/56,483.82
6. Step 6: Final answer
   x = 62,355.86