Finding the Fourth Proportional to 101,119, 139,548.54 and 56,407

Step by Step Solution

1. Step 1: Write the proportion equation
   101,119 : 139,548.54 = 56,407 : x
2. Step 2: Convert to fraction form
   101,119/139,548.54 = 56,407/x
3. Step 3: Cross multiply
   101,119x = 139,548.54 × 56,407
4. Step 4: Simplify right side
   101,119x = 7,871,514,495.78
5. Step 5: Solve for x
   x = 7,871,514,495.78/101,119
6. Step 6: Final answer
   x = 77,844.07