Finding the Fourth Proportional to 78,568,620.17, 108,387,144.50 and 61,045,042.10

Step by Step Solution

1. Step 1: Write the proportion equation
   78,568,620.17 : 108,387,144.50 = 61,045,042.10 : x
2. Step 2: Convert to fraction form
   78,568,620.17/108,387,144.50 = 61,045,042.10/x
3. Step 3: Cross multiply
   78,568,620.17x = 108,387,144.50 × 61,045,042.10
4. Step 4: Simplify right side
   78,568,620.17x = 6,616,497,798,254,123
5. Step 5: Solve for x
   x = 6,616,497,798,254,123/78,568,620.17
6. Step 6: Final answer
   x = 84,212,982.03