Finding the Fourth Proportional to 84,137.59, 116,152.72 and 64,974.34

Step by Step Solution

1. Step 1: Write the proportion equation
   84,137.59 : 116,152.72 = 64,974.34 : x
2. Step 2: Convert to fraction form
   84,137.59/116,152.72 = 64,974.34/x
3. Step 3: Cross multiply
   84,137.59x = 116,152.72 × 64,974.34
4. Step 4: Simplify right side
   84,137.59x = 7,546,945,650.60
5. Step 5: Solve for x
   x = 7,546,945,650.60/84,137.59
6. Step 6: Final answer
   x = 89,697.67