Finding the Fourth Proportional to 56,602.86, 78,110.30 and 31,109.22

Step by Step Solution

1. Step 1: Write the proportion equation
   56,602.86 : 78,110.30 = 31,109.22 : x
2. Step 2: Convert to fraction form
   56,602.86/78,110.30 = 31,109.22/x
3. Step 3: Cross multiply
   56,602.86x = 78,110.30 × 31,109.22
4. Step 4: Simplify right side
   56,602.86x = 2,429,950,552.17
5. Step 5: Solve for x
   x = 2,429,950,552.17/56,602.86
6. Step 6: Final answer
   x = 42,929.82