Finding the Fourth Proportional to 113,029.07, 155,978.46 and 64,630.49

Step by Step Solution

1. Step 1: Write the proportion equation
   113,029.07 : 155,978.46 = 64,630.49 : x
2. Step 2: Convert to fraction form
   113,029.07/155,978.46 = 64,630.49/x
3. Step 3: Cross multiply
   113,029.07x = 155,978.46 × 64,630.49
4. Step 4: Simplify right side
   113,029.07x = 10,080,963,519.35
5. Step 5: Solve for x
   x = 10,080,963,519.35/113,029.07
6. Step 6: Final answer
   x = 89,189.13