Finding the Fourth Proportional to 89,587.42, 123,642.05 and 57,848.58

Step by Step Solution

1. Step 1: Write the proportion equation
   89,587.42 : 123,642.05 = 57,848.58 : x
2. Step 2: Convert to fraction form
   89,587.42/123,642.05 = 57,848.58/x
3. Step 3: Cross multiply
   89,587.42x = 123,642.05 × 57,848.58
4. Step 4: Simplify right side
   89,587.42x = 7,152,516,731.55
5. Step 5: Solve for x
   x = 7,152,516,731.55/89,587.42
6. Step 6: Final answer
   x = 79,838.41