Finding the Fourth Proportional to 189,316.69, 261,210.42 and 115,710.47

Step by Step Solution

1. Step 1: Write the proportion equation
   189,316.69 : 261,210.42 = 115,710.47 : x
2. Step 2: Convert to fraction form
   189,316.69/261,210.42 = 115,710.47/x
3. Step 3: Cross multiply
   189,316.69x = 261,210.42 × 115,710.47
4. Step 4: Simplify right side
   189,316.69x = 30,224,781,609.89
5. Step 5: Solve for x
   x = 30,224,781,609.89/189,316.69
6. Step 6: Final answer
   x = 159,651.96