Finding the Fourth Proportional to 90,533.30, 124,492.83 and 78,575.81

Step by Step Solution

1. Step 1: Write the proportion equation
   90,533.30 : 124,492.83 = 78,575.81 : x
2. Step 2: Convert to fraction form
   90,533.30/124,492.83 = 78,575.81/x
3. Step 3: Cross multiply
   90,533.30x = 124,492.83 × 78,575.81
4. Step 4: Simplify right side
   90,533.30x = 9,782,124,956.44
5. Step 5: Solve for x
   x = 9,782,124,956.44/90,533.30
6. Step 6: Final answer
   x = 108,050.02