Finding the Fourth Proportional to 76,513.35, 105,598.29 and 42,985.83

Step by Step Solution

1. Step 1: Write the proportion equation
   76,513.35 : 105,598.29 = 42,985.83 : x
2. Step 2: Convert to fraction form
   76,513.35/105,598.29 = 42,985.83/x
3. Step 3: Cross multiply
   76,513.35x = 105,598.29 × 42,985.83
4. Step 4: Simplify right side
   76,513.35x = 4,539,230,142.23
5. Step 5: Solve for x
   x = 4,539,230,142.23/76,513.35
6. Step 6: Final answer
   x = 59,325.99