Finding the Fourth Proportional to 64,877,898.21, 89,521,868.74 and 39,404,061.33

Step by Step Solution

1. Step 1: Write the proportion equation
   64,877,898.21 : 89,521,868.74 = 39,404,061.33 : x
2. Step 2: Convert to fraction form
   64,877,898.21/89,521,868.74 = 39,404,061.33/x
3. Step 3: Cross multiply
   64,877,898.21x = 89,521,868.74 × 39,404,061.33
4. Step 4: Simplify right side
   64,877,898.21x = 3,527,525,206,207,169.50
5. Step 5: Solve for x
   x = 3,527,525,206,207,169.50/64,877,898.21
6. Step 6: Final answer
   x = 54,371,755.31