Finding the Fourth Proportional to 77,288.34, 106,652.79 and 42,830.76

Step by Step Solution

1. Step 1: Write the proportion equation
   77,288.34 : 106,652.79 = 42,830.76 : x
2. Step 2: Convert to fraction form
   77,288.34/106,652.79 = 42,830.76/x
3. Step 3: Cross multiply
   77,288.34x = 106,652.79 × 42,830.76
4. Step 4: Simplify right side
   77,288.34x = 4,568,020,051.82
5. Step 5: Solve for x
   x = 4,568,020,051.82/77,288.34
6. Step 6: Final answer
   x = 59,103.61