Finding the Fourth Proportional to 42,521,467, 58,697,762.79 and 28,590,896.65

Step by Step Solution

1. Step 1: Write the proportion equation
   42,521,467 : 58,697,762.79 = 28,590,896.65 : x
2. Step 2: Convert to fraction form
   42,521,467/58,697,762.79 = 28,590,896.65/x
3. Step 3: Cross multiply
   42,521,467x = 58,697,762.79 × 28,590,896.65
4. Step 4: Simplify right side
   42,521,467x = 1,678,221,669,515,105.50
5. Step 5: Solve for x
   x = 1,678,221,669,515,105.50/42,521,467
6. Step 6: Final answer
   x = 39,467,633.36