Finding the Fourth Proportional to 56,601.18, 78,105.83 and 31,106.99

Step by Step Solution

1. Step 1: Write the proportion equation
   56,601.18 : 78,105.83 = 31,106.99 : x
2. Step 2: Convert to fraction form
   56,601.18/78,105.83 = 31,106.99/x
3. Step 3: Cross multiply
   56,601.18x = 78,105.83 × 31,106.99
4. Step 4: Simplify right side
   56,601.18x = 2,429,637,312.48
5. Step 5: Solve for x
   x = 2,429,637,312.48/56,601.18
6. Step 6: Final answer
   x = 42,925.56