Finding the Fourth Proportional to 139,443,472.65, 209,190,742.21 and 57,517,658.04

Step by Step Solution

1. Step 1: Write the proportion equation
   139,443,472.65 : 209,190,742.21 = 57,517,658.04 : x
2. Step 2: Convert to fraction form
   139,443,472.65/209,190,742.21 = 57,517,658.04/x
3. Step 3: Cross multiply
   139,443,472.65x = 209,190,742.21 × 57,517,658.04
4. Step 4: Simplify right side
   139,443,472.65x = 12,032,161,575,568,574
5. Step 5: Solve for x
   x = 12,032,161,575,568,574/139,443,472.65
6. Step 6: Final answer
   x = 86,287,019.01