Finding the Fourth Proportional to 43,060.77, 64,123.22 and 42,905.25

Step by Step Solution

1. Step 1: Write the proportion equation
   43,060.77 : 64,123.22 = 42,905.25 : x
2. Step 2: Convert to fraction form
   43,060.77/64,123.22 = 42,905.25/x
3. Step 3: Cross multiply
   43,060.77x = 64,123.22 × 42,905.25
4. Step 4: Simplify right side
   43,060.77x = 2,751,222,892.17
5. Step 5: Solve for x
   x = 2,751,222,892.17/43,060.77
6. Step 6: Final answer
   x = 63,891.63