Finding the Fourth Proportional to 69,076.90, 103,692.15 and 42,811.30

Step by Step Solution

1. Step 1: Write the proportion equation
   69,076.90 : 103,692.15 = 42,811.30 : x
2. Step 2: Convert to fraction form
   69,076.90/103,692.15 = 42,811.30/x
3. Step 3: Cross multiply
   69,076.90x = 103,692.15 × 42,811.30
4. Step 4: Simplify right side
   69,076.90x = 4,439,195,741.30
5. Step 5: Solve for x
   x = 4,439,195,741.30/69,076.90
6. Step 6: Final answer
   x = 64,264.55