Finding the Fourth Proportional to 72,978.15, 109,510.46 and 30,855.93

Step by Step Solution

1. Step 1: Write the proportion equation
   72,978.15 : 109,510.46 = 30,855.93 : x
2. Step 2: Convert to fraction form
   72,978.15/109,510.46 = 30,855.93/x
3. Step 3: Cross multiply
   72,978.15x = 109,510.46 × 30,855.93
4. Step 4: Simplify right side
   72,978.15x = 3,379,047,088.03
5. Step 5: Solve for x
   x = 3,379,047,088.03/72,978.15
6. Step 6: Final answer
   x = 46,302.18