Finding the Fourth Proportional to 380,756.77, 571,061.31 and 144,117.91

Step by Step Solution

1. Step 1: Write the proportion equation
   380,756.77 : 571,061.31 = 144,117.91 : x
2. Step 2: Convert to fraction form
   380,756.77/571,061.31 = 144,117.91/x
3. Step 3: Cross multiply
   380,756.77x = 571,061.31 × 144,117.91
4. Step 4: Simplify right side
   380,756.77x = 82,300,162,479.06
5. Step 5: Solve for x
   x = 82,300,162,479.06/380,756.77
6. Step 6: Final answer
   x = 216,148.91