Finding the Fourth Proportional to 72,722.63, 100,340.89 and 42,090.98

Step by Step Solution

1. Step 1: Write the proportion equation
   72,722.63 : 100,340.89 = 42,090.98 : x
2. Step 2: Convert to fraction form
   72,722.63/100,340.89 = 42,090.98/x
3. Step 3: Cross multiply
   72,722.63x = 100,340.89 × 42,090.98
4. Step 4: Simplify right side
   72,722.63x = 4,223,445,787.24
5. Step 5: Solve for x
   x = 4,223,445,787.24/72,722.63
6. Step 6: Final answer
   x = 58,076.09