Finding the Fourth Proportional to 95,505.81, 143,209.50 and 42,870.18

Step by Step Solution

1. Step 1: Write the proportion equation
   95,505.81 : 143,209.50 = 42,870.18 : x
2. Step 2: Convert to fraction form
   95,505.81/143,209.50 = 42,870.18/x
3. Step 3: Cross multiply
   95,505.81x = 143,209.50 × 42,870.18
4. Step 4: Simplify right side
   95,505.81x = 6,139,417,042.71
5. Step 5: Solve for x
   x = 6,139,417,042.71/95,505.81
6. Step 6: Final answer
   x = 64,283.18