Finding the Fourth Proportional to 56,602.94, 78,106.97 and 31,109.03

Step by Step Solution

1. Step 1: Write the proportion equation
   56,602.94 : 78,106.97 = 31,109.03 : x
2. Step 2: Convert to fraction form
   56,602.94/78,106.97 = 31,109.03/x
3. Step 3: Cross multiply
   56,602.94x = 78,106.97 × 31,109.03
4. Step 4: Simplify right side
   56,602.94x = 2,429,831,760.18
5. Step 5: Solve for x
   x = 2,429,831,760.18/56,602.94
6. Step 6: Final answer
   x = 42,927.66