Finding the Fourth Proportional to 59,799.42, 81,925.59 and 57,557.34

Step by Step Solution

1. Step 1: Write the proportion equation
   59,799.42 : 81,925.59 = 57,557.34 : x
2. Step 2: Convert to fraction form
   59,799.42/81,925.59 = 57,557.34/x
3. Step 3: Cross multiply
   59,799.42x = 81,925.59 × 57,557.34
4. Step 4: Simplify right side
   59,799.42x = 4,715,419,038.33
5. Step 5: Solve for x
   x = 4,715,419,038.33/59,799.42
6. Step 6: Final answer
   x = 78,853.93