Finding the Fourth Proportional to 133,407.72, 184,102.59 and 72,978.34

Step by Step Solution

1. Step 1: Write the proportion equation
   133,407.72 : 184,102.59 = 72,978.34 : x
2. Step 2: Convert to fraction form
   133,407.72/184,102.59 = 72,978.34/x
3. Step 3: Cross multiply
   133,407.72x = 184,102.59 × 72,978.34
4. Step 4: Simplify right side
   133,407.72x = 13,435,501,503.27
5. Step 5: Solve for x
   x = 13,435,501,503.27/133,407.72
6. Step 6: Final answer
   x = 100,710.08