Finding the Fourth Proportional to 156,978.90, 235,457.55 and 50,361.30

Step by Step Solution

1. Step 1: Write the proportion equation
   156,978.90 : 235,457.55 = 50,361.30 : x
2. Step 2: Convert to fraction form
   156,978.90/235,457.55 = 50,361.30/x
3. Step 3: Cross multiply
   156,978.90x = 235,457.55 × 50,361.30
4. Step 4: Simplify right side
   156,978.90x = 11,857,948,312.82
5. Step 5: Solve for x
   x = 11,857,948,312.82/156,978.90
6. Step 6: Final answer
   x = 75,538.49