Finding the Fourth Proportional to 93,078.72, 139,644 and 51,554.88

Step by Step Solution

1. Step 1: Write the proportion equation
   93,078.72 : 139,644 = 51,554.88 : x
2. Step 2: Convert to fraction form
   93,078.72/139,644 = 51,554.88/x
3. Step 3: Cross multiply
   93,078.72x = 139,644 × 51,554.88
4. Step 4: Simplify right side
   93,078.72x = 7,199,329,662.72
5. Step 5: Solve for x
   x = 7,199,329,662.72/93,078.72
6. Step 6: Final answer
   x = 77,346.68