Finding the Fourth Proportional to 56,020.32, 77,307.05 and 30,526.91

Step by Step Solution

1. Step 1: Write the proportion equation
   56,020.32 : 77,307.05 = 30,526.91 : x
2. Step 2: Convert to fraction form
   56,020.32/77,307.05 = 30,526.91/x
3. Step 3: Cross multiply
   56,020.32x = 77,307.05 × 30,526.91
4. Step 4: Simplify right side
   56,020.32x = 2,359,945,357.72
5. Step 5: Solve for x
   x = 2,359,945,357.72/56,020.32
6. Step 6: Final answer
   x = 42,126.60