Finding the Fourth Proportional to 105,301.32, 145,314.98 and 59,356.78

Step by Step Solution

1. Step 1: Write the proportion equation
   105,301.32 : 145,314.98 = 59,356.78 : x
2. Step 2: Convert to fraction form
   105,301.32/145,314.98 = 59,356.78/x
3. Step 3: Cross multiply
   105,301.32x = 145,314.98 × 59,356.78
4. Step 4: Simplify right side
   105,301.32x = 8,625,429,298.56
5. Step 5: Solve for x
   x = 8,625,429,298.56/105,301.32
6. Step 6: Final answer
   x = 81,911.88