Finding the Fourth Proportional to 134,817, 186,047.28 and 74,387.62

Step by Step Solution

1. Step 1: Write the proportion equation
   134,817 : 186,047.28 = 74,387.62 : x
2. Step 2: Convert to fraction form
   134,817/186,047.28 = 74,387.62/x
3. Step 3: Cross multiply
   134,817x = 186,047.28 × 74,387.62
4. Step 4: Simplify right side
   134,817x = 13,839,614,366.67
5. Step 5: Solve for x
   x = 13,839,614,366.67/134,817
6. Step 6: Final answer
   x = 102,654.82