Finding the Fourth Proportional to 191,487.69, 287,031.87 and 107,124.17

Step by Step Solution

1. Step 1: Write the proportion equation
   191,487.69 : 287,031.87 = 107,124.17 : x
2. Step 2: Convert to fraction form
   191,487.69/287,031.87 = 107,124.17/x
3. Step 3: Cross multiply
   191,487.69x = 287,031.87 × 107,124.17
4. Step 4: Simplify right side
   191,487.69x = 30,748,049,402.14
5. Step 5: Solve for x
   x = 30,748,049,402.14/191,487.69
6. Step 6: Final answer
   x = 160,574.55