Finding the Fourth Proportional to 99,099.50, 136,764.05 and 56,079.01

Step by Step Solution

1. Step 1: Write the proportion equation
   99,099.50 : 136,764.05 = 56,079.01 : x
2. Step 2: Convert to fraction form
   99,099.50/136,764.05 = 56,079.01/x
3. Step 3: Cross multiply
   99,099.50x = 136,764.05 × 56,079.01
4. Step 4: Simplify right side
   99,099.50x = 7,669,592,033.50
5. Step 5: Solve for x
   x = 7,669,592,033.50/99,099.50
6. Step 6: Final answer
   x = 77,392.84