Finding the Fourth Proportional to 99,836.96, 137,774.16 and 55,124

Step by Step Solution

1. Step 1: Write the proportion equation
   99,836.96 : 137,774.16 = 55,124 : x
2. Step 2: Convert to fraction form
   99,836.96/137,774.16 = 55,124/x
3. Step 3: Cross multiply
   99,836.96x = 137,774.16 × 55,124
4. Step 4: Simplify right side
   99,836.96x = 7,594,662,795.84
5. Step 5: Solve for x
   x = 7,594,662,795.84/99,836.96
6. Step 6: Final answer
   x = 76,070.65