Finding the Fourth Proportional to 8,845,540.31, 12,206,820.65 and 4,978,061.49

Step by Step Solution

1. Step 1: Write the proportion equation
   8,845,540.31 : 12,206,820.65 = 4,978,061.49 : x
2. Step 2: Convert to fraction form
   8,845,540.31/12,206,820.65 = 4,978,061.49/x
3. Step 3: Cross multiply
   8,845,540.31x = 12,206,820.65 × 4,978,061.49
4. Step 4: Simplify right side
   8,845,540.31x = 60,766,303,793,101.77
5. Step 5: Solve for x
   x = 60,766,303,793,101.77/8,845,540.31
6. Step 6: Final answer
   x = 6,869,710.80