Finding the Fourth Proportional to 56,380.74, 77,804.53 and 30,886.89

Step by Step Solution

1. Step 1: Write the proportion equation
   56,380.74 : 77,804.53 = 30,886.89 : x
2. Step 2: Convert to fraction form
   56,380.74/77,804.53 = 30,886.89/x
3. Step 3: Cross multiply
   56,380.74x = 77,804.53 × 30,886.89
4. Step 4: Simplify right side
   56,380.74x = 2,403,139,959.61
5. Step 5: Solve for x
   x = 2,403,139,959.61/56,380.74
6. Step 6: Final answer
   x = 42,623.42