Finding the Fourth Proportional to 71,042,026.10, 99,559,613.50 and 71,042,026.10

Step by Step Solution

1. Step 1: Write the proportion equation
   71,042,026.10 : 99,559,613.50 = 71,042,026.10 : x
2. Step 2: Convert to fraction form
   71,042,026.10/99,559,613.50 = 71,042,026.10/x
3. Step 3: Cross multiply
   71,042,026.10x = 99,559,613.50 × 71,042,026.10
4. Step 4: Simplify right side
   71,042,026.10x = 7,072,916,660,772,912
5. Step 5: Solve for x
   x = 7,072,916,660,772,912/71,042,026.10
6. Step 6: Final answer
   x = 99,559,613.50