Finding the Fourth Proportional to 369,112.83, 553,472.37 and 191,178.51

Step by Step Solution

1. Step 1: Write the proportion equation
   369,112.83 : 553,472.37 = 191,178.51 : x
2. Step 2: Convert to fraction form
   369,112.83/553,472.37 = 191,178.51/x
3. Step 3: Cross multiply
   369,112.83x = 553,472.37 × 191,178.51
4. Step 4: Simplify right side
   369,112.83x = 105,812,023,022.77
5. Step 5: Solve for x
   x = 105,812,023,022.77/369,112.83
6. Step 6: Final answer
   x = 286,665.80