Finding the Fourth Proportional to 64,454.28, 88,887.42 and 42,956.10

Step by Step Solution

1. Step 1: Write the proportion equation
   64,454.28 : 88,887.42 = 42,956.10 : x
2. Step 2: Convert to fraction form
   64,454.28/88,887.42 = 42,956.10/x
3. Step 3: Cross multiply
   64,454.28x = 88,887.42 × 42,956.10
4. Step 4: Simplify right side
   64,454.28x = 3,818,256,902.26
5. Step 5: Solve for x
   x = 3,818,256,902.26/64,454.28
6. Step 6: Final answer
   x = 59,239.77