Finding the Fourth Proportional to 48,978.78, 73,554.31 and 48,277.58

Step by Step Solution

1. Step 1: Write the proportion equation
   48,978.78 : 73,554.31 = 48,277.58 : x
2. Step 2: Convert to fraction form
   48,978.78/73,554.31 = 48,277.58/x
3. Step 3: Cross multiply
   48,978.78x = 73,554.31 × 48,277.58
4. Step 4: Simplify right side
   48,978.78x = 3,551,024,085.37
5. Step 5: Solve for x
   x = 3,551,024,085.37/48,978.78
6. Step 6: Final answer
   x = 72,501.28