Finding the Fourth Proportional to 56,618.58, 78,133.59 and 31,126.62

Step by Step Solution

1. Step 1: Write the proportion equation
   56,618.58 : 78,133.59 = 31,126.62 : x
2. Step 2: Convert to fraction form
   56,618.58/78,133.59 = 31,126.62/x
3. Step 3: Cross multiply
   56,618.58x = 78,133.59 × 31,126.62
4. Step 4: Simplify right side
   56,618.58x = 2,432,034,565.17
5. Step 5: Solve for x
   x = 2,432,034,565.17/56,618.58
6. Step 6: Final answer
   x = 42,954.71