Finding the Fourth Proportional to 216,298,185.86, 298,489,846.58 and 117,178,224.18

Step by Step Solution

1. Step 1: Write the proportion equation
   216,298,185.86 : 298,489,846.58 = 117,178,224.18 : x
2. Step 2: Convert to fraction form
   216,298,185.86/298,489,846.58 = 117,178,224.18/x
3. Step 3: Cross multiply
   216,298,185.86x = 298,489,846.58 × 117,178,224.18
4. Step 4: Simplify right side
   216,298,185.86x = 34,976,510,158,005,048
5. Step 5: Solve for x
   x = 34,976,510,158,005,048/216,298,185.86
6. Step 6: Final answer
   x = 161,705,055.54