Finding the Fourth Proportional to 76,077.57, 104,985.15 and 42,087.93

Step by Step Solution

1. Step 1: Write the proportion equation
   76,077.57 : 104,985.15 = 42,087.93 : x
2. Step 2: Convert to fraction form
   76,077.57/104,985.15 = 42,087.93/x
3. Step 3: Cross multiply
   76,077.57x = 104,985.15 × 42,087.93
4. Step 4: Simplify right side
   76,077.57x = 4,418,607,644.24
5. Step 5: Solve for x
   x = 4,418,607,644.24/76,077.57
6. Step 6: Final answer
   x = 58,080.29