Finding the Fourth Proportional to 76,445.30, 105,498.01 and 42,453.94

Step by Step Solution

1. Step 1: Write the proportion equation
   76,445.30 : 105,498.01 = 42,453.94 : x
2. Step 2: Convert to fraction form
   76,445.30/105,498.01 = 42,453.94/x
3. Step 3: Cross multiply
   76,445.30x = 105,498.01 × 42,453.94
4. Step 4: Simplify right side
   76,445.30x = 4,478,805,975.98
5. Step 5: Solve for x
   x = 4,478,805,975.98/76,445.30
6. Step 6: Final answer
   x = 58,588.38