Finding the Fourth Proportional to 78,038.66, 107,692.56 and 42,227.90

Step by Step Solution

1. Step 1: Write the proportion equation
   78,038.66 : 107,692.56 = 42,227.90 : x
2. Step 2: Convert to fraction form
   78,038.66/107,692.56 = 42,227.90/x
3. Step 3: Cross multiply
   78,038.66x = 107,692.56 × 42,227.90
4. Step 4: Simplify right side
   78,038.66x = 4,547,630,654.42
5. Step 5: Solve for x
   x = 4,547,630,654.42/78,038.66
6. Step 6: Final answer
   x = 58,274.07