Finding the Fourth Proportional to 347,719.02, 521,659.89 and 107,820.30

Step by Step Solution

1. Step 1: Write the proportion equation
   347,719.02 : 521,659.89 = 107,820.30 : x
2. Step 2: Convert to fraction form
   347,719.02/521,659.89 = 107,820.30/x
3. Step 3: Cross multiply
   347,719.02x = 521,659.89 × 107,820.30
4. Step 4: Simplify right side
   347,719.02x = 56,245,525,837.77
5. Step 5: Solve for x
   x = 56,245,525,837.77/347,719.02
6. Step 6: Final answer
   x = 161,755.68