Finding the Fourth Proportional to 166,189.86, 249,300.47 and 128,791.82

Step by Step Solution

1. Step 1: Write the proportion equation
   166,189.86 : 249,300.47 = 128,791.82 : x
2. Step 2: Convert to fraction form
   166,189.86/249,300.47 = 128,791.82/x
3. Step 3: Cross multiply
   166,189.86x = 249,300.47 × 128,791.82
4. Step 4: Simplify right side
   166,189.86x = 32,107,860,936.18
5. Step 5: Solve for x
   x = 32,107,860,936.18/166,189.86
6. Step 6: Final answer
   x = 193,199.88