Finding the Fourth Proportional to 31,099,789.05, 46,649,683.59 and 8,380,686.30

Step by Step Solution

1. Step 1: Write the proportion equation
   31,099,789.05 : 46,649,683.59 = 8,380,686.30 : x
2. Step 2: Convert to fraction form
   31,099,789.05/46,649,683.59 = 8,380,686.30/x
3. Step 3: Cross multiply
   31,099,789.05x = 46,649,683.59 × 8,380,686.30
4. Step 4: Simplify right side
   31,099,789.05x = 390,956,364,162,047.81
5. Step 5: Solve for x
   x = 390,956,364,162,047.81/31,099,789.05
6. Step 6: Final answer
   x = 12,571,029.45