Finding the Fourth Proportional to 101,430.12, 139,962.76 and 56,100.88

Step by Step Solution

1. Step 1: Write the proportion equation
   101,430.12 : 139,962.76 = 56,100.88 : x
2. Step 2: Convert to fraction form
   101,430.12/139,962.76 = 56,100.88/x
3. Step 3: Cross multiply
   101,430.12x = 139,962.76 × 56,100.88
4. Step 4: Simplify right side
   101,430.12x = 7,852,034,003.23
5. Step 5: Solve for x
   x = 7,852,034,003.23/101,430.12
6. Step 6: Final answer
   x = 77,413.24