Finding the Fourth Proportional to 139,072.98, 208,430.64 and 63,116.04

Step by Step Solution

1. Step 1: Write the proportion equation
   139,072.98 : 208,430.64 = 63,116.04 : x
2. Step 2: Convert to fraction form
   139,072.98/208,430.64 = 63,116.04/x
3. Step 3: Cross multiply
   139,072.98x = 208,430.64 × 63,116.04
4. Step 4: Simplify right side
   139,072.98x = 13,155,316,611.47
5. Step 5: Solve for x
   x = 13,155,316,611.47/139,072.98
6. Step 6: Final answer
   x = 94,592.90