Finding the Fourth Proportional to 115,613,399.72, 159,531,827.76 and 63,388,692.68

Step by Step Solution

1. Step 1: Write the proportion equation
   115,613,399.72 : 159,531,827.76 = 63,388,692.68 : x
2. Step 2: Convert to fraction form
   115,613,399.72/159,531,827.76 = 63,388,692.68/x
3. Step 3: Cross multiply
   115,613,399.72x = 159,531,827.76 × 63,388,692.68
4. Step 4: Simplify right side
   115,613,399.72x = 10,112,514,002,557,332
5. Step 5: Solve for x
   x = 10,112,514,002,557,332/115,613,399.72
6. Step 6: Final answer
   x = 87,468,355.98