Finding the Fourth Proportional to 78,415.98, 108,214.17 and 42,605.98

Step by Step Solution

1. Step 1: Write the proportion equation
   78,415.98 : 108,214.17 = 42,605.98 : x
2. Step 2: Convert to fraction form
   78,415.98/108,214.17 = 42,605.98/x
3. Step 3: Cross multiply
   78,415.98x = 108,214.17 × 42,605.98
4. Step 4: Simplify right side
   78,415.98x = 4,610,570,492.20
5. Step 5: Solve for x
   x = 4,610,570,492.20/78,415.98
6. Step 6: Final answer
   x = 58,796.31