Finding the Fourth Proportional to 116,880,946.56, 161,300,465.28 and 64,669,136.64

Step by Step Solution

1. Step 1: Write the proportion equation
   116,880,946.56 : 161,300,465.28 = 64,669,136.64 : x
2. Step 2: Convert to fraction form
   116,880,946.56/161,300,465.28 = 64,669,136.64/x
3. Step 3: Cross multiply
   116,880,946.56x = 161,300,465.28 × 64,669,136.64
4. Step 4: Simplify right side
   116,880,946.56x = 10,431,161,829,287,896
5. Step 5: Solve for x
   x = 10,431,161,829,287,896/116,880,946.56
6. Step 6: Final answer
   x = 89,246,041.69