Finding the Fourth Proportional to 99,566.04, 137,308.82 and 72,665.94

Step by Step Solution

1. Step 1: Write the proportion equation
   99,566.04 : 137,308.82 = 72,665.94 : x
2. Step 2: Convert to fraction form
   99,566.04/137,308.82 = 72,665.94/x
3. Step 3: Cross multiply
   99,566.04x = 137,308.82 × 72,665.94
4. Step 4: Simplify right side
   99,566.04x = 9,977,674,475.59
5. Step 5: Solve for x
   x = 9,977,674,475.59/99,566.04
6. Step 6: Final answer
   x = 100,211.62