Finding the Fourth Proportional to 101,680,528.50, 140,386,696.83 and 78,117,098.76

Step by Step Solution

1. Step 1: Write the proportion equation
   101,680,528.50 : 140,386,696.83 = 78,117,098.76 : x
2. Step 2: Convert to fraction form
   101,680,528.50/140,386,696.83 = 78,117,098.76/x
3. Step 3: Cross multiply
   101,680,528.50x = 140,386,696.83 × 78,117,098.76
4. Step 4: Simplify right side
   101,680,528.50x = 10,966,601,460,859,290
5. Step 5: Solve for x
   x = 10,966,601,460,859,290/101,680,528.50
6. Step 6: Final answer
   x = 107,853,505.71