Finding the Fourth Proportional to 105,091.53, 145,026.10 and 59,147.47

Step by Step Solution

1. Step 1: Write the proportion equation
   105,091.53 : 145,026.10 = 59,147.47 : x
2. Step 2: Convert to fraction form
   105,091.53/145,026.10 = 59,147.47/x
3. Step 3: Cross multiply
   105,091.53x = 145,026.10 × 59,147.47
4. Step 4: Simplify right side
   105,091.53x = 8,577,926,005.71
5. Step 5: Solve for x
   x = 8,577,926,005.71/105,091.53
6. Step 6: Final answer
   x = 81,623.38