Finding the Fourth Proportional to 42,906,344.10, 64,359,516.15 and 42,906,344.10

Step by Step Solution

1. Step 1: Write the proportion equation
   42,906,344.10 : 64,359,516.15 = 42,906,344.10 : x
2. Step 2: Convert to fraction form
   42,906,344.10/64,359,516.15 = 42,906,344.10/x
3. Step 3: Cross multiply
   42,906,344.10x = 64,359,516.15 × 42,906,344.10
4. Step 4: Simplify right side
   42,906,344.10x = 2,761,431,546,041,407
5. Step 5: Solve for x
   x = 2,761,431,546,041,407/42,906,344.10
6. Step 6: Final answer
   x = 64,359,516.15