Finding the Fourth Proportional to 56,649.60, 78,174.79 and 31,156.07

Step by Step Solution

1. Step 1: Write the proportion equation
   56,649.60 : 78,174.79 = 31,156.07 : x
2. Step 2: Convert to fraction form
   56,649.60/78,174.79 = 31,156.07/x
3. Step 3: Cross multiply
   56,649.60x = 78,174.79 × 31,156.07
4. Step 4: Simplify right side
   56,649.60x = 2,435,618,760.71
5. Step 5: Solve for x
   x = 2,435,618,760.71/56,649.60
6. Step 6: Final answer
   x = 42,994.46