Finding the Fourth Proportional to 89,785,401.60, 134,489,145.60 and 74,668,857.60

Step by Step Solution

1. Step 1: Write the proportion equation
   89,785,401.60 : 134,489,145.60 = 74,668,857.60 : x
2. Step 2: Convert to fraction form
   89,785,401.60/134,489,145.60 = 74,668,857.60/x
3. Step 3: Cross multiply
   89,785,401.60x = 134,489,145.60 × 74,668,857.60
4. Step 4: Simplify right side
   89,785,401.60x = 10,042,150,861,552,066
5. Step 5: Solve for x
   x = 10,042,150,861,552,066/89,785,401.60
6. Step 6: Final answer
   x = 111,846,142.94