Finding the Fourth Proportional to 516,132, 774,263.61 and 142,155

Step by Step Solution

1. Step 1: Write the proportion equation
   516,132 : 774,263.61 = 142,155 : x
2. Step 2: Convert to fraction form
   516,132/774,263.61 = 142,155/x
3. Step 3: Cross multiply
   516,132x = 774,263.61 × 142,155
4. Step 4: Simplify right side
   516,132x = 110,065,443,479.55
5. Step 5: Solve for x
   x = 110,065,443,479.55/516,132
6. Step 6: Final answer
   x = 213,250.57