Finding the Fourth Proportional to 99,444.96, 137,178.72 and 75,533.76

Step by Step Solution

1. Step 1: Write the proportion equation
   99,444.96 : 137,178.72 = 75,533.76 : x
2. Step 2: Convert to fraction form
   99,444.96/137,178.72 = 75,533.76/x
3. Step 3: Cross multiply
   99,444.96x = 137,178.72 × 75,533.76
4. Step 4: Simplify right side
   99,444.96x = 10,361,624,513.59
5. Step 5: Solve for x
   x = 10,361,624,513.59/99,444.96
6. Step 6: Final answer
   x = 104,194.57