Finding the Fourth Proportional to 99,500.06, 137,310.09 and 54,788.06

Step by Step Solution

1. Step 1: Write the proportion equation
   99,500.06 : 137,310.09 = 54,788.06 : x
2. Step 2: Convert to fraction form
   99,500.06/137,310.09 = 54,788.06/x
3. Step 3: Cross multiply
   99,500.06x = 137,310.09 × 54,788.06
4. Step 4: Simplify right side
   99,500.06x = 7,522,953,587.35
5. Step 5: Solve for x
   x = 7,522,953,587.35/99,500.06
6. Step 6: Final answer
   x = 75,607.53