Finding the Fourth Proportional to 113,003.34, 155,905.97 and 64,570.50

Step by Step Solution

1. Step 1: Write the proportion equation
   113,003.34 : 155,905.97 = 64,570.50 : x
2. Step 2: Convert to fraction form
   113,003.34/155,905.97 = 64,570.50/x
3. Step 3: Cross multiply
   113,003.34x = 155,905.97 × 64,570.50
4. Step 4: Simplify right side
   113,003.34x = 10,066,926,113.03
5. Step 5: Solve for x
   x = 10,066,926,113.03/113,003.34
6. Step 6: Final answer
   x = 89,085.21