Finding the Fourth Proportional to 209,307,781.69, 288,844,738.73 and 116,510,211.47

Step by Step Solution

1. Step 1: Write the proportion equation
   209,307,781.69 : 288,844,738.73 = 116,510,211.47 : x
2. Step 2: Convert to fraction form
   209,307,781.69/288,844,738.73 = 116,510,211.47/x
3. Step 3: Cross multiply
   209,307,781.69x = 288,844,738.73 × 116,510,211.47
4. Step 4: Simplify right side
   209,307,781.69x = 33,653,361,592,005,672
5. Step 5: Solve for x
   x = 33,653,361,592,005,672/209,307,781.69
6. Step 6: Final answer
   x = 160,784,091.83