Finding the Fourth Proportional to 107,978.53, 149,009.34 and 59,580.89

Step by Step Solution

1. Step 1: Write the proportion equation
   107,978.53 : 149,009.34 = 59,580.89 : x
2. Step 2: Convert to fraction form
   107,978.53/149,009.34 = 59,580.89/x
3. Step 3: Cross multiply
   107,978.53x = 149,009.34 × 59,580.89
4. Step 4: Simplify right side
   107,978.53x = 8,878,109,095.51
5. Step 5: Solve for x
   x = 8,878,109,095.51/107,978.53
6. Step 6: Final answer
   x = 82,221.06