Finding the Fourth Proportional to 56,830.56, 78,427.17 and 31,680.06

Step by Step Solution

1. Step 1: Write the proportion equation
   56,830.56 : 78,427.17 = 31,680.06 : x
2. Step 2: Convert to fraction form
   56,830.56/78,427.17 = 31,680.06/x
3. Step 3: Cross multiply
   56,830.56x = 78,427.17 × 31,680.06
4. Step 4: Simplify right side
   56,830.56x = 2,484,577,451.23
5. Step 5: Solve for x
   x = 2,484,577,451.23/56,830.56
6. Step 6: Final answer
   x = 43,719.04