Finding the Fourth Proportional to 39,978,565.50, 59,929,538.49 and 16,917,777.06

Step by Step Solution

1. Step 1: Write the proportion equation
   39,978,565.50 : 59,929,538.49 = 16,917,777.06 : x
2. Step 2: Convert to fraction form
   39,978,565.50/59,929,538.49 = 16,917,777.06/x
3. Step 3: Cross multiply
   39,978,565.50x = 59,929,538.49 × 16,917,777.06
4. Step 4: Simplify right side
   39,978,565.50x = 1,013,874,571,482,509
5. Step 5: Solve for x
   x = 1,013,874,571,482,509/39,978,565.50
6. Step 6: Final answer
   x = 25,360,454.00