Finding the Fourth Proportional to 78,513.72, 108,349.44 and 42,703.98

Step by Step Solution

1. Step 1: Write the proportion equation
   78,513.72 : 108,349.44 = 42,703.98 : x
2. Step 2: Convert to fraction form
   78,513.72/108,349.44 = 42,703.98/x
3. Step 3: Cross multiply
   78,513.72x = 108,349.44 × 42,703.98
4. Step 4: Simplify right side
   78,513.72x = 4,626,952,318.77
5. Step 5: Solve for x
   x = 4,626,952,318.77/78,513.72
6. Step 6: Final answer
   x = 58,931.77