Finding the Fourth Proportional to 671,667.51, 1,007,535.84 and 191,857.47

Step by Step Solution

1. Step 1: Write the proportion equation
   671,667.51 : 1,007,535.84 = 191,857.47 : x
2. Step 2: Convert to fraction form
   671,667.51/1,007,535.84 = 191,857.47/x
3. Step 3: Cross multiply
   671,667.51x = 1,007,535.84 × 191,857.47
4. Step 4: Simplify right side
   671,667.51x = 193,303,277,196.73
5. Step 5: Solve for x
   x = 193,303,277,196.73/671,667.51
6. Step 6: Final answer
   x = 287,796.08