Finding the Fourth Proportional to 73,978.85, 102,010.55 and 47,086.98

Step by Step Solution

1. Step 1: Write the proportion equation
   73,978.85 : 102,010.55 = 47,086.98 : x
2. Step 2: Convert to fraction form
   73,978.85/102,010.55 = 47,086.98/x
3. Step 3: Cross multiply
   73,978.85x = 102,010.55 × 47,086.98
4. Step 4: Simplify right side
   73,978.85x = 4,803,368,492.20
5. Step 5: Solve for x
   x = 4,803,368,492.20/73,978.85
6. Step 6: Final answer
   x = 64,928.95