Finding the Fourth Proportional to 52,686.08, 78,945.89 and 42,776.95

Step by Step Solution

1. Step 1: Write the proportion equation
   52,686.08 : 78,945.89 = 42,776.95 : x
2. Step 2: Convert to fraction form
   52,686.08/78,945.89 = 42,776.95/x
3. Step 3: Cross multiply
   52,686.08x = 78,945.89 × 42,776.95
4. Step 4: Simplify right side
   52,686.08x = 3,377,064,389.24
5. Step 5: Solve for x
   x = 3,377,064,389.24/52,686.08
6. Step 6: Final answer
   x = 64,097.85