Finding the Fourth Proportional to 191,486.57, 287,030.18 and 107,123.04

Step by Step Solution

1. Step 1: Write the proportion equation
   191,486.57 : 287,030.18 = 107,123.04 : x
2. Step 2: Convert to fraction form
   191,486.57/287,030.18 = 107,123.04/x
3. Step 3: Cross multiply
   191,486.57x = 287,030.18 × 107,123.04
4. Step 4: Simplify right side
   191,486.57x = 30,747,545,721.15
5. Step 5: Solve for x
   x = 30,747,545,721.15/191,486.57
6. Step 6: Final answer
   x = 160,572.86