Finding the Fourth Proportional to 99,805.50, 137,731.59 and 55,093.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,805.50 : 137,731.59 = 55,093.50 : x
2. Step 2: Convert to fraction form
   99,805.50/137,731.59 = 55,093.50/x
3. Step 3: Cross multiply
   99,805.50x = 137,731.59 × 55,093.50
4. Step 4: Simplify right side
   99,805.50x = 7,588,115,353.67
5. Step 5: Solve for x
   x = 7,588,115,353.67/99,805.50
6. Step 6: Final answer
   x = 76,029.03