Finding the Fourth Proportional to 51,990,415.82, 71,749,016.02 and 28,785,543.10

Step by Step Solution

1. Step 1: Write the proportion equation
   51,990,415.82 : 71,749,016.02 = 28,785,543.10 : x
2. Step 2: Convert to fraction form
   51,990,415.82/71,749,016.02 = 28,785,543.10/x
3. Step 3: Cross multiply
   51,990,415.82x = 71,749,016.02 × 28,785,543.10
4. Step 4: Simplify right side
   51,990,415.82x = 2,065,334,393,026,300.50
5. Step 5: Solve for x
   x = 2,065,334,393,026,300.50/51,990,415.82
6. Step 6: Final answer
   x = 39,725,290.91