Finding the Fourth Proportional to 78,323.81, 108,088.77 and 42,513.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,323.81 : 108,088.77 = 42,513.72 : x
2. Step 2: Convert to fraction form
   78,323.81/108,088.77 = 42,513.72/x
3. Step 3: Cross multiply
   78,323.81x = 108,088.77 × 42,513.72
4. Step 4: Simplify right side
   78,323.81x = 4,595,255,702.92
5. Step 5: Solve for x
   x = 4,595,255,702.92/78,323.81
6. Step 6: Final answer
   x = 58,669.98