Finding the Fourth Proportional to 56,107, 77,428.74 and 30,955.96

Step by Step Solution

1. Step 1: Write the proportion equation
   56,107 : 77,428.74 = 30,955.96 : x
2. Step 2: Convert to fraction form
   56,107/77,428.74 = 30,955.96/x
3. Step 3: Cross multiply
   56,107x = 77,428.74 × 30,955.96
4. Step 4: Simplify right side
   56,107x = 2,396,880,978.29
5. Step 5: Solve for x
   x = 2,396,880,978.29/56,107
6. Step 6: Final answer
   x = 42,719.82