Finding the Fourth Proportional to 64,553,075.33, 89,043,442.49 and 39,423,395.57

Step by Step Solution

1. Step 1: Write the proportion equation
   64,553,075.33 : 89,043,442.49 = 39,423,395.57 : x
2. Step 2: Convert to fraction form
   64,553,075.33/89,043,442.49 = 39,423,395.57/x
3. Step 3: Cross multiply
   64,553,075.33x = 89,043,442.49 × 39,423,395.57
4. Step 4: Simplify right side
   64,553,075.33x = 3,510,394,855,851,157
5. Step 5: Solve for x
   x = 3,510,394,855,851,157/64,553,075.33
6. Step 6: Final answer
   x = 54,379,978.62