Finding the Fourth Proportional to 56,071.34, 77,377.48 and 30,577.91

Step by Step Solution

1. Step 1: Write the proportion equation
   56,071.34 : 77,377.48 = 30,577.91 : x
2. Step 2: Convert to fraction form
   56,071.34/77,377.48 = 30,577.91/x
3. Step 3: Cross multiply
   56,071.34x = 77,377.48 × 30,577.91
4. Step 4: Simplify right side
   56,071.34x = 2,366,041,156.13
5. Step 5: Solve for x
   x = 2,366,041,156.13/56,071.34
6. Step 6: Final answer
   x = 42,196.98