Finding the Fourth Proportional to 82,649,799.12, 123,974,283.96 and 21,238,890.96

Step by Step Solution

1. Step 1: Write the proportion equation
   82,649,799.12 : 123,974,283.96 = 21,238,890.96 : x
2. Step 2: Convert to fraction form
   82,649,799.12/123,974,283.96 = 21,238,890.96/x
3. Step 3: Cross multiply
   82,649,799.12x = 123,974,283.96 × 21,238,890.96
4. Step 4: Simplify right side
   82,649,799.12x = 2,633,076,298,870,517
5. Step 5: Solve for x
   x = 2,633,076,298,870,517/82,649,799.12
6. Step 6: Final answer
   x = 31,858,229.87