Finding the Fourth Proportional to 104,556.69, 156,818.57 and 86,900.72

Step by Step Solution

1. Step 1: Write the proportion equation
   104,556.69 : 156,818.57 = 86,900.72 : x
2. Step 2: Convert to fraction form
   104,556.69/156,818.57 = 86,900.72/x
3. Step 3: Cross multiply
   104,556.69x = 156,818.57 × 86,900.72
4. Step 4: Simplify right side
   104,556.69x = 13,627,645,423.77
5. Step 5: Solve for x
   x = 13,627,645,423.77/104,556.69
6. Step 6: Final answer
   x = 130,337.38