Finding the Fourth Proportional to 123,051.90, 169,812.42 and 72,094.80

Step by Step Solution

1. Step 1: Write the proportion equation
   123,051.90 : 169,812.42 = 72,094.80 : x
2. Step 2: Convert to fraction form
   123,051.90/169,812.42 = 72,094.80/x
3. Step 3: Cross multiply
   123,051.90x = 169,812.42 × 72,094.80
4. Step 4: Simplify right side
   123,051.90x = 12,242,592,457.42
5. Step 5: Solve for x
   x = 12,242,592,457.42/123,051.90
6. Step 6: Final answer
   x = 99,491.29