Finding the Fourth Proportional to 76,587.53, 105,682.73 and 42,590.51

Step by Step Solution

1. Step 1: Write the proportion equation
   76,587.53 : 105,682.73 = 42,590.51 : x
2. Step 2: Convert to fraction form
   76,587.53/105,682.73 = 42,590.51/x
3. Step 3: Cross multiply
   76,587.53x = 105,682.73 × 42,590.51
4. Step 4: Simplify right side
   76,587.53x = 4,501,081,023.84
5. Step 5: Solve for x
   x = 4,501,081,023.84/76,587.53
6. Step 6: Final answer
   x = 58,770.42