Finding the Fourth Proportional to 77,404.02, 106,818.76 and 43,420.06

Step by Step Solution

1. Step 1: Write the proportion equation
   77,404.02 : 106,818.76 = 43,420.06 : x
2. Step 2: Convert to fraction form
   77,404.02/106,818.76 = 43,420.06/x
3. Step 3: Cross multiply
   77,404.02x = 106,818.76 × 43,420.06
4. Step 4: Simplify right side
   77,404.02x = 4,638,076,968.33
5. Step 5: Solve for x
   x = 4,638,076,968.33/77,404.02
6. Step 6: Final answer
   x = 59,920.36