Finding the Fourth Proportional to 64,499,608.30, 90,554,543.30 and 64,499,608.30

Step by Step Solution

1. Step 1: Write the proportion equation
   64,499,608.30 : 90,554,543.30 = 64,499,608.30 : x
2. Step 2: Convert to fraction form
   64,499,608.30/90,554,543.30 = 64,499,608.30/x
3. Step 3: Cross multiply
   64,499,608.30x = 90,554,543.30 × 64,499,608.30
4. Step 4: Simplify right side
   64,499,608.30x = 5,840,732,572,635,389
5. Step 5: Solve for x
   x = 5,840,732,572,635,389/64,499,608.30
6. Step 6: Final answer
   x = 90,554,543.30