Finding the Fourth Proportional to 99,408, 137,185.92 and 54,696

Step by Step Solution

1. Step 1: Write the proportion equation
   99,408 : 137,185.92 = 54,696 : x
2. Step 2: Convert to fraction form
   99,408/137,185.92 = 54,696/x
3. Step 3: Cross multiply
   99,408x = 137,185.92 × 54,696
4. Step 4: Simplify right side
   99,408x = 7,503,521,080.32
5. Step 5: Solve for x
   x = 7,503,521,080.32/99,408
6. Step 6: Final answer
   x = 75,482.06