Finding the Fourth Proportional to 113,290.44, 156,296.56 and 64,866.49

Step by Step Solution

1. Step 1: Write the proportion equation
   113,290.44 : 156,296.56 = 64,866.49 : x
2. Step 2: Convert to fraction form
   113,290.44/156,296.56 = 64,866.49/x
3. Step 3: Cross multiply
   113,290.44x = 156,296.56 × 64,866.49
4. Step 4: Simplify right side
   113,290.44x = 10,138,409,246.27
5. Step 5: Solve for x
   x = 10,138,409,246.27/113,290.44
6. Step 6: Final answer
   x = 89,490.42