Finding the Fourth Proportional to 56,050.32, 77,349.98 and 30,900.72

Step by Step Solution

1. Step 1: Write the proportion equation
   56,050.32 : 77,349.98 = 30,900.72 : x
2. Step 2: Convert to fraction form
   56,050.32/77,349.98 = 30,900.72/x
3. Step 3: Cross multiply
   56,050.32x = 77,349.98 × 30,900.72
4. Step 4: Simplify right side
   56,050.32x = 2,390,170,073.99
5. Step 5: Solve for x
   x = 2,390,170,073.99/56,050.32
6. Step 6: Final answer
   x = 42,643.29