Finding the Fourth Proportional to 90,376.72, 124,667.92 and 56,368.86

Step by Step Solution

1. Step 1: Write the proportion equation
   90,376.72 : 124,667.92 = 56,368.86 : x
2. Step 2: Convert to fraction form
   90,376.72/124,667.92 = 56,368.86/x
3. Step 3: Cross multiply
   90,376.72x = 124,667.92 × 56,368.86
4. Step 4: Simplify right side
   90,376.72x = 7,027,388,528.97
5. Step 5: Solve for x
   x = 7,027,388,528.97/90,376.72
6. Step 6: Final answer
   x = 77,756.62