Finding the Fourth Proportional to 91,821.02, 137,602.20 and 73,017.62

Step by Step Solution

1. Step 1: Write the proportion equation
   91,821.02 : 137,602.20 = 73,017.62 : x
2. Step 2: Convert to fraction form
   91,821.02/137,602.20 = 73,017.62/x
3. Step 3: Cross multiply
   91,821.02x = 137,602.20 × 73,017.62
4. Step 4: Simplify right side
   91,821.02x = 10,047,385,150.76
5. Step 5: Solve for x
   x = 10,047,385,150.76/91,821.02
6. Step 6: Final answer
   x = 109,423.58