Finding the Fourth Proportional to 99,558.42, 137,390.58 and 54,846.42

Step by Step Solution

1. Step 1: Write the proportion equation
   99,558.42 : 137,390.58 = 54,846.42 : x
2. Step 2: Convert to fraction form
   99,558.42/137,390.58 = 54,846.42/x
3. Step 3: Cross multiply
   99,558.42x = 137,390.58 × 54,846.42
4. Step 4: Simplify right side
   99,558.42x = 7,535,381,454.72
5. Step 5: Solve for x
   x = 7,535,381,454.72/99,558.42
6. Step 6: Final answer
   x = 75,688.04