Finding the Fourth Proportional to 309,747,275.72, 464,633,735.89 and 91,397,613.63

Step by Step Solution

1. Step 1: Write the proportion equation
   309,747,275.72 : 464,633,735.89 = 91,397,613.63 : x
2. Step 2: Convert to fraction form
   309,747,275.72/464,633,735.89 = 91,397,613.63/x
3. Step 3: Cross multiply
   309,747,275.72x = 464,633,735.89 × 91,397,613.63
4. Step 4: Simplify right side
   309,747,275.72x = 42,466,414,671,880,696
5. Step 5: Solve for x
   x = 42,466,414,671,880,696/309,747,275.72
6. Step 6: Final answer
   x = 137,100,203.94