Finding the Fourth Proportional to 99,667.88, 137,539.92 and 54,346.22

Step by Step Solution

1. Step 1: Write the proportion equation
   99,667.88 : 137,539.92 = 54,346.22 : x
2. Step 2: Convert to fraction form
   99,667.88/137,539.92 = 54,346.22/x
3. Step 3: Cross multiply
   99,667.88x = 137,539.92 × 54,346.22
4. Step 4: Simplify right side
   99,667.88x = 7,474,774,751.10
5. Step 5: Solve for x
   x = 7,474,774,751.10/99,667.88
6. Step 6: Final answer
   x = 74,996.83