Finding the Fourth Proportional to 99,846.72, 137,788.72 and 54,525.06

Step by Step Solution

1. Step 1: Write the proportion equation
   99,846.72 : 137,788.72 = 54,525.06 : x
2. Step 2: Convert to fraction form
   99,846.72/137,788.72 = 54,525.06/x
3. Step 3: Cross multiply
   99,846.72x = 137,788.72 × 54,525.06
4. Step 4: Simplify right side
   99,846.72x = 7,512,938,225.32
5. Step 5: Solve for x
   x = 7,512,938,225.32/99,846.72
6. Step 6: Final answer
   x = 75,244.72