Finding the Fourth Proportional to 56,892.89, 78,495.99 and 34,220.54

Step by Step Solution

1. Step 1: Write the proportion equation
   56,892.89 : 78,495.99 = 34,220.54 : x
2. Step 2: Convert to fraction form
   56,892.89/78,495.99 = 34,220.54/x
3. Step 3: Cross multiply
   56,892.89x = 78,495.99 × 34,220.54
4. Step 4: Simplify right side
   56,892.89x = 2,686,174,773.15
5. Step 5: Solve for x
   x = 2,686,174,773.15/56,892.89
6. Step 6: Final answer
   x = 47,214.60