Finding the Fourth Proportional to 56,178.93, 77,525.67 and 30,685.37

Step by Step Solution

1. Step 1: Write the proportion equation
   56,178.93 : 77,525.67 = 30,685.37 : x
2. Step 2: Convert to fraction form
   56,178.93/77,525.67 = 30,685.37/x
3. Step 3: Cross multiply
   56,178.93x = 77,525.67 × 30,685.37
4. Step 4: Simplify right side
   56,178.93x = 2,378,903,595.89
5. Step 5: Solve for x
   x = 2,378,903,595.89/56,178.93
6. Step 6: Final answer
   x = 42,345.12