Finding the Fourth Proportional to 73,990.60, 102,087.34 and 42,158.82

Step by Step Solution

1. Step 1: Write the proportion equation
   73,990.60 : 102,087.34 = 42,158.82 : x
2. Step 2: Convert to fraction form
   73,990.60/102,087.34 = 42,158.82/x
3. Step 3: Cross multiply
   73,990.60x = 102,087.34 × 42,158.82
4. Step 4: Simplify right side
   73,990.60x = 4,303,881,791.34
5. Step 5: Solve for x
   x = 4,303,881,791.34/73,990.60
6. Step 6: Final answer
   x = 58,167.95