Finding the Fourth Proportional to 209,300,031.50, 288,831,222.24 and 116,480,514.74

Step by Step Solution

1. Step 1: Write the proportion equation
   209,300,031.50 : 288,831,222.24 = 116,480,514.74 : x
2. Step 2: Convert to fraction form
   209,300,031.50/288,831,222.24 = 116,480,514.74/x
3. Step 3: Cross multiply
   209,300,031.50x = 288,831,222.24 × 116,480,514.74
4. Step 4: Simplify right side
   209,300,031.50x = 33,643,209,439,498,536
5. Step 5: Solve for x
   x = 33,643,209,439,498,536/209,300,031.50
6. Step 6: Final answer
   x = 160,741,540.26