Finding the Fourth Proportional to 76,503.61, 105,571.53 and 42,511.93

Step by Step Solution

1. Step 1: Write the proportion equation
   76,503.61 : 105,571.53 = 42,511.93 : x
2. Step 2: Convert to fraction form
   76,503.61/105,571.53 = 42,511.93/x
3. Step 3: Cross multiply
   76,503.61x = 105,571.53 × 42,511.93
4. Step 4: Simplify right side
   76,503.61x = 4,488,049,493.35
5. Step 5: Solve for x
   x = 4,488,049,493.35/76,503.61
6. Step 6: Final answer
   x = 58,664.55