Finding the Fourth Proportional to 56,156.16, 77,494.32 and 31,005.12

Step by Step Solution

1. Step 1: Write the proportion equation
   56,156.16 : 77,494.32 = 31,005.12 : x
2. Step 2: Convert to fraction form
   56,156.16/77,494.32 = 31,005.12/x
3. Step 3: Cross multiply
   56,156.16x = 77,494.32 × 31,005.12
4. Step 4: Simplify right side
   56,156.16x = 2,402,720,690.92
5. Step 5: Solve for x
   x = 2,402,720,690.92/56,156.16
6. Step 6: Final answer
   x = 42,786.41